How to Make Eggshell Calcium (and Why You’d Want to)

Photo of homemade eggshell calcium DIY project

Calcium is the most abundant mineral in our body.

While most of our calcium resides in our bones and teeth, it’s also important for muscle contraction, nerve health, enzyme activity and cell formation.

In fact, our bodies need ample, daily amounts of calcium… and if we don’t get what we need, our bodies have no problem pulling excess stores from our teeth and bones.

So, let’s just say we want to be sure we’re consuming PLENTY of calcium, especially if we are a pregnant or nursing mama!

I do best consuming ~ 2,000mg of calcium a day.

I feel the most calm and balanced and don’t suffer from muscle soreness or body stiffness. High-quality organic, and preferably raw, dairy products are phenomenal sources of calcium as are bone broths, fish bones, and even almonds.But since I would need to drink 2 quarts of milk to hit this quota, I sometime rely on a calcium supplement, especially when I’m nursing or pregnant.

Which one to chose? Calcium citrate? Hydroxide? Gluconate? Aspartate? Or Coral Calcium? And, I could go on!

But as natural mamas, we know that the best source is FOOD since it’s the mostly easily accessible for the body.

Did you know that eggshells are a great, inexpensive, natural source of calcium?

Yes, EGGSHELL Calcium!

High-quality eggshells contain 27 essential microelements but they’re mostly composed of calcium carbonate, a form and structure that’s very similar to our bones and teeth.

In animal and human tests, eggshell calcium shows increased bone density, less arthritic pain, and even stimulates cartilage growth. You can read more about it here.

Sounds great, huh? And it’s really easy to make.

Ingredients and equipment:

  • 1 carton of organic pastured chicken eggs
    If you can get fresh from the farm, even better and try to get eggs from chickens that don’t eat soy. Pay the extra price since this will serve as a supplement and is much cheaper than buying calcium tablets. Confused how to find or know if eggs are good quality? Here’s a tip… the thicker the shell, the more nutrients. I don’t have a good source close to where I live, so I order mine from Tropical Traditions and their farms in Wisconsin. I love theirs because they are SOY-FREE, something very hard to find in store bought, even organic eggs.

You will also need:

Directions

  • Use up your eggs as you normally would, keeping the shell in the carton to make your supplement
  • When you have your dozen shells, rinse them well in water. Remove any whites that might be stuck but don’t remove membrane as these have extra nutrients.
  • Fill a stock pot with approximately 6 cups of filtered water and bring to a boil.
  • Carefully put your eggshells into water. (This will kill any harmful pathogens)
  • Let cook for 10 minutes.
  • Drain shells.
  • Spread the shells on glass or stainless steel baking sheet and let dry overnight. In the morning, put in a 200 degree (Fahrenheit) oven for about 10 minutes to completely dry out.
  • Once completed, put a few shells into a coffee grinder and run until they are pulverized into a granular form. Continue until all of your shells are powder.
  • Store in a tightly sealed Mason jar in the cupboard away from heat or moisture.

How to Consume Eggshell Calcium

1 tsp. contains approximately 800-1,000 mg. of calcium. Consume by mixing in a small amount of water with a meal. Consume 3/4 to 1 tsp daily, divided in 3 servings with meals. Don’t consumer more than 1 tsp a day as it can irritate sensitive digestive tracks.

ENJOY!

How about YOU? What’s YOUR favorite way to get calcium into your diet?

Eggshell Calcium Studies:
  • http://www.ncbi.nlm.nih.gov/pubmed/11281164
  • http://www.ncbi.nlm.nih.gov/pubmed/15018022

About Genevieve

After battling weight, digestive, and immune system issues for years, I know firsthand the harmful effects of conventional life. Through a long road of detox, I discovered the healing power of natural living. This transformation spread into every area of my life - physical, emotional & spiritual. Now I'm on a mission to help other mamas live happier, healthier lives.

Please note: Many links on this site, especially those to Amazon, are affiliate links. Should you click on these links and purchase something, the price is no different for you and I earn a small commission. Thanks for supporting Mama Natural!

Disclaimer: The statements made here have not been approved by the Food and Drug Administration. These statements are not intended to diagnose, treat or cure or prevent any disease. This notice is required by the Federal Food, Drug and Cosmetic Act.

179 Comments

  1. MEL November 12 at 4:36 pm

    hello

    when you make homemade egg shells for calcium, how many days it will be using with fresh?
    is there any time for or can I use till my eggshells end?

    and how I can keep that egg sheel in fridge or tempurature room is enough to store?

    thank you for answers have a healthy days.

  2. Jessica October 5 at 3:25 pm

    How much should I give a 3 and 5 year old?

  3. Hope August 19 at 7:12 pm

    So when I’m trying to get calcium out of eggshells for my garden I break down the egg shells (which are calcium carbonate I believe) in 2 to 1 water to vinegar which separates it into calcium and hydrogen. My question is, is the calcium what is left over in the egg shell or is it in the water.

    • Lili August 26 at 2:17 pm

      Hello there! I believe it’s in the water. When making bone broth you typically add cider vinegar and let sit for an hour to ‘leach’ the calcium and nutrients out of the bones and into your yummy broth! I would suspect the same with egg shells. So, skip on the vinegar treatment, unless you want to drink the water or use it in a soup ( but I haven’t tried this).

  4. Blues August 5 at 1:58 am

    I need help!!

    I have been grinding up my last few cartons eggs since reading this and I’m super into the idea! But.. I feel like the powder is way too “crunchy”.

    I jumped over to this site from a link on another site talking about making toothpaste. A reader suggested making your own eggshell calcium for the recipe rather than buying her suggested calcium magnesium powder.

    So, I originally made it for my recipe. I feel like it is DESTROYING my teeth! I get chunks of eggshells when I’m brushing my teeth so I brush really lightly but still.. I have also been trying to take it in the morning by mixing in a glass of water, and I get all these eggshells stuck in my throat.

    Should I give up the toothpaste dream or is it possible to make it more powdery? I am using a coffee grinder but I also have a Ninja food processor.

    • Sue October 6 at 8:33 am

      I have a capsule machine and I buy veggie caps to make my own natural supplements. Neither one are very expensive. I think you can get them from Amazon. I also have chickens so I will make up capsules with ground egg shells for myself. I usually give group shells to my chickens but now I’m going to try them.

    • Gen October 28 at 4:11 am

      I have vitamix dry container and it blends mine into the finest, softest powder! You just need a better grinder.

  5. More July 9 at 9:48 pm

    For additional calcium I usually drink milk, eat eggs and seafood such as crab, fish ..
    I was wondering what your homemade safe or not?

    • dave August 17 at 7:30 pm

      why would you assume you get calcium from milk? please stop believing what your told, the body cannot assimilate calcium or any other nutrient (apart from sugar and water) from milk due to the pasteurising process. also eggs cause sulphuric acid so if your ill its not a good idea to consume eggs or milk although the calcium you get from the eggshell is ok. to truly protect your bones and teeth you need to take Boron, Boric acid is its natural form on this planet and is essentially sunlight believe it or not, you need 3 mg a day of Boron Boric acid is 17.5% and Borax is 10% of Boron you also need to combine with 4-600 mg of magnesium a day.

      • pepe September 29 at 8:47 pm

        The specialist has spoken!

      • shawn kearney October 5 at 9:38 am

        You are not seriously suggesting that heating milk to around 160 degrees for 15 seconds degrades calcium in such a way that it is not accessible by the body.

        You’re seriously saying that.

      • Andrea November 16 at 11:12 am

        Pasteurization is The heating of milk to a temperature of at least 161°F to kill the bacteria in the milk. If this process makes the calcium of the milk un-absorbable by the human body, then how is it that we can absorb the calcium of the egg shells which have been raised to the temperature of 212°F when they were boiled? I’m not trying to be difficult or antagonistic, but rather I truly want to understand The science behind it all. It Currently does not make sense to me!

      • Maureen November 24 at 8:50 am

        Doesn’t all boric acid contain arsenic?

  6. Jan Drake July 1 at 3:50 pm

    If your going to boil the eggs, don’t throw out the water when your done. Let the water cool then add it to your garden. Tomatoes and other nightshade plants love the extra calcium. One way to prevent “end blossom rot” in tomatoes is by adding calcium. You can also top dress with the powder, or make a calcium tea that you can water your plants with. It will also raise the PH balance of your soil.

    Some people say that the powder will keep slugs away, it’s like glass to them and will shred their undersides.

  7. Holly June 13 at 9:09 am

    *grabs popcorn and sits back to read the comments*

    • Jill June 30 at 2:26 pm

      I’ve used calcium carbonate in the past. (dolomite powder) I tried to use it in my coffee maker with the grounds and it clogged up the paper filter…i did this to try to alkalize my coffee a bit(now I use baking soda) i’m not sure we have the same digestive systems as chickens(see other posts) to break down the shells…so I think maybe i’m going to boil my shells, cool the water and make ice cubes out of it to add to soups,.stews and home made ice tea…that is, if I do this at all…there is a raging debate over whether we should be taking calcium at all. Remember, cows get their calcium from eating grass! Kale,.bok Choy etc. contain calcium.

      • Jill June 30 at 2:33 pm

        Me again… Also: some studies show that without Vitamin k,.calcium will “calcify” our arteries,.heart, kidneys, gallbladders instead of our bones…. Which is a sign of aging….

  8. Bea June 1 at 10:40 am

    I blend eggshells, washed and disinfected with hydrogen peroxide on the nutribullet 900, they are powder in a blink.

  9. richard May 28 at 3:13 pm

    calcium, magnesium and zink all work together, is there a natural way to get zink like you are with the calcium?
    You need to moderate and delete some of the bad/mean and off topic comments

    • dave August 17 at 7:32 pm

      zinc cancels out magnesium never take these together, always wait 3 hours between eating so your body can use up the nutrients for where it needs them

      • shawn kearney October 5 at 9:41 am

        how about we just eat healthy food and not worry about all this supplementation insanity.

        • missy October 9 at 12:35 pm

          Do you realize you would have to eat 50 oranges to equal the nutrition value of an orange our parents ate 50 yrs ago? Our soil is so depleted of nutrients which is why we need supplements.

  10. Sharon Askew April 23 at 8:32 am

    I think it may be better to steam the egg shells instead of boiling if you want to kill pathogens without leaching out the calcium and minerals.

  11. Angela Miller April 5 at 3:41 pm

    Again, do your research:)
    It’s not calcium carbonate. So funny how ignorance can get ya every time.
    Agree with the hate comment. People that lash out at others in that way are generally just unhappy with themselves.

  12. Jen March 31 at 12:09 pm

    All that hate, wonder how healthy it is.

  13. ann beman February 23 at 9:34 am

    Hi Genevieve Im so happy reading this! Ive been doing the same for years. I always feel like a bit of a weirdo whenever I tell anyone about it, every though, when ever I do, people always find it interesting.

    Im a gardener – grow my own veggies – and an avid composter – extreme home composting :D But egg shells take forever in the compost bin and Im mean, jeez, why wait?! If you pulverize in now, your garden can be gobbling up the calcium+ today! Also its really good for the worms in my worm-composter – scours their gut.

    Anyway, one question … I understand the need to kill potential pathogen but is the boiling really necessay? Why not just bake? How long how hot would be safe, do you think? Just trying to streamline the process here — we eat a LOT of eggs!
    Anyway, thanks for writing this :)

    • Genevieve June 13 at 11:52 am

      You probably could just bake if you get your eggs from a pure source. Boiling also helps to separate white film. Totally up to you :)

      • Marcus July 15 at 3:51 pm

        Hi Genevieve

        If the eggshell I use are from hardboiled eggs I think I could skip the safety steps if I peel them soon after boiling. Do you agree?

    • Angela Miller April 5 at 2:01 pm

      Monika-have you done your research, she is not advocating the grinding and injection of stone. She has resources listed so that you may be more informed.

    • Sue October 6 at 8:37 am

      Some calcium you can get in the store are from oyster shells. I would think they are harder to digest than egg shells. Am I thinking right?

  14. 21leftcenter January 21 at 1:21 pm

    This is brilliant! I sneak this into my husband’s breakfast every morning! He has no clue!

  15. susan January 17 at 10:02 am

    Hi – very interested to read of using eggshells this way – went to copy the url into my browser and it automatically added other stuff added at the end of the url, which led to a ‘no page at this address’ result.

    Only when I shortened it to just http://www.ncbi.nlm.nih.gov/pubmed/15018022 did it take me there.

  16. rebekah December 26 at 6:06 pm

    Hello! Great info here. I have chickens and I think there is soy in the laying pellets that I gave them last week but this week I bought them scratch. Have to check to see if it contains soy. So what if they have had soy in the past, are the egg shells still not beneficial to eat?? If I wait a couple of days/weeks after them being on a non soy product, will this insure that soy is not in their eggs?? Please help answer this because I just found out I am pregnant and I really want to start eating my egg shells for the calcium and now I am not so sure because of the soy in their food….Please help!
    thanks
    Rebekah

  17. Norma December 25 at 7:04 pm

    if we do not wish to digest it, can it be used in a lotion, salve, scrub? thanks for the ideas

  18. Shelly December 14 at 2:05 pm

    I missed the step of boiling the eggshells.Oops. I put the eggshells in my food processor and ground them up. Didn’t make powder but very tiny pieces. I put 2 tablespoons in my shake every morning.
    Do you think I’ll still get the same benefit from doing it this way.
    Thanks for all your helpful info!!

  19. povsextube.com December 4 at 10:46 am

    Hello just wanted to give you a brief heads up and let you
    know a few of the pictures aren’t loading correctly.
    I’m not sure why but I think its a linking issue.
    I’ve tried it in two different internet browsers and both show the same results.

  20. Katie November 22 at 8:01 pm

    Mike you don’t have to believe. Go take a hike. If you are a rocket scientist, you are a pretty stupid one. The rest of us will be happy to try it. You probably make your living selling expensive, ineffective OTC supplements.

  21. Rea November 20 at 5:24 am

    DOH ! I do this for our birds, I don’t know why I didn’t think to do it for us.

  22. Lauren November 16 at 2:04 pm

    Ummm I think they mean pasture as in the opposite of caged….I.E. free range. Free range chickens are raised in a pasture- which is a pen that is made up of fencing used for farm purposes so that the chickens while still contained, have plenty of room to roam and live normally vs. being cooped up in cages in substandard miserable living conditions.

  23. Juniper November 9 at 9:37 am

    start your research here:
    http://www.ncbi.nlm.nih.gov/pubmed/15018022 and follow related articles links. Int J Clin Pharmacol Res. 2003;23(2-3):83-92.
    Eggshell calcium in the prevention and treatment of osteoporosis.
    Rovenský J, Stancíková M, Masaryk P, Svík K, Istok R.
    Source

    National Institute of Rheumatic Diseases, Piestany, Slovak Republic. rovensky@nurch.sk
    Abstract

    In this paper the most significant biological and clinical aspects of a biopreparation made of chicken eggshells are reviewed. Eggshell powder is a natural source of calcium and other elements (e.g. strontium and fluorine) which may have a positive effect on bone metabolism. Experimental and clinical studies performed to date have shown a number of positive properties of eggshell powder, such as antirachitic effects in rats and humans. A positive effect was observed on bone density in animal models of postmenopausal osteoporosis in ovariectomized female rats. In vitro eggshell powder stimulates chondrocyte differentiation and cartilage growth. Clinical studies in postmenopausal women and women with senile osteoporosis showed that eggshell powder reduces pain and osteoresorption and increases mobility and bone density or arrests its loss. The bioavailability of calcium from this source, as tested in piglets, was similar or better than that of food grade purified calcium carbonate. Clinical and experimental studies showed that eggshell powder has positive effects on bone and cartilage and that it is suitable in the prevention and treatment of osteoporosis.

    • Mindy R October 16 at 9:55 pm

      Thank you for this….I love details!! :)

  24. Greta November 6 at 5:22 am

    I had pet birds and it was suggested by books to feed them my leftover eggshells for calcium. I give my houseplants the water from the boiled eggs. The birds loved it.

  25. John November 4 at 11:58 pm

    Hello all, thank you all for shearing, thoughts,wisdom,knowledge. This article and comments has touched me deeply. Normally I do not comment in open fourms like this but I would like to give this a try. The memories of growing up with nature, growing vegatable, fruits, expanding horticulture, boy scouts, ect ect. Become better to understand there is a true natural balance in everything we touch, smell, taste, see, hear. It takes networking with others like this to repourpose egg sheels that becomes full circle renewable resouroes that comes back to us 100 x over. Like using ground oyster shells for pourtry scratch in egg production, and in Koi ponds to balance slow release calicum to reduce acid levels. Ill will stop before i ramble on. Thank you John

  26. Lisa November 2 at 10:48 pm

    Tara
    I’m not sure why you feel that article “balances” this one. It says that it’s best to use natural forms of calcium and to make sure you are getting enough of the other vitamins and minerals that are needed to work with calcium in the body.

  27. MARLENE JONES October 30 at 7:46 pm

    Your remarks on magnesium are so true. My husband has a true magnesium deficiency. I say true as it is not brought on by alcoholism or drinking at all. He had a severe physical problem about six years ago which the doctors could not figure out. He had been on the floor vomiting and his eyes were rolling around in his head. I called the ambulance. They arrived and took him to hospital. They thought he had a stroke. Then they thought heart attack. Sent him to a different hospital in a nearby city. They sent him to the neuro floor. Again no one could figure out why his eyes ere rolling around in his head. Had him hooked up to ekg machine. It showed extreme arrhythmia. They checked his magnesium levels after all other mineral and vitamin levels were checked. Said there was NO magnesium left in his system. Put him on a drip for two days. It took that long to get it to normal range. In the two days in the hospital he was hallucinating, talking to people who were not there, made no sense in phone calls and kept having the arrhythmias, even tho’ he had no heart attack or any known heart problems. This just shows you what the lack of magnesium can do to the body. It works with the muscles to keep them running smoothly. The deficiency persist in my husband to this day, although now they have him on a two high blood pressure meds which keeps it from dropping really low. Oh and doctors get very little education on nutrition in medical school. That is the least part of their education. They don’t feel this is as important as the rest of their studies.

  28. Debbie Thomas October 27 at 11:08 pm

    Calcium is also good for your skin. I use eggs in my soap to get proteins – remember egg facials? I am going to try to add the calcium from the shells and see how much I feel the difference. Great Idea! When I do it I will post the findings on Bubble Love Sedona Soap on FB – Thank you

  29. Dee October 17 at 9:46 am

    Great info! Just thought I’d add that you could also use this powder to sprinkle around tomato and clematis plants as both love calcium. I will also use it in the natural toothpaste you have posted.

  30. Kate October 12 at 11:42 am

    It’s a waste of time, energy, and filtered water to boil them before putting them in the oven. They will get pasteurized in the oven just fine :)

  31. Norma October 10 at 11:49 am

    I would think that boiling the eggshells will take out the calcium. Sort of like when some gardeners will cool the egg water from boiled eggs to water thier plant that need calcium.

  32. skookem October 8 at 12:22 am

    Is this calcium absorbable?

  33. Soni October 7 at 1:25 pm

    Wondering….can I just add the powder to my tea and/or coffee in the morning?

    • Genevieve October 7 at 8:15 pm

      You could try. It’s a little chalky though.

  34. Chris Lion October 7 at 12:39 am

    Just a friendly note… All people and especially those suffering from kidney disease should know their calcium levels. Please don’t consume extra, since it can prove to be damaging for your body.

    • Sara Jo Poff October 9 at 5:28 pm

      This is conventional medical thought and it is false. Just because our body secretes excess calcium does not mean it is taking in too much. The problem is a diet full of refined sugars and other processed foods that cause our body to draw out calcium in order to balance the acidity of the sugars. So we shouldn’t prevent people from getting calcium (that they are most likely deficient in) but to stop consuming diets high in refined sugars that suck the calcium and other essential nutrients out of our bodies!

    • Amanda w September 9 at 5:45 am

      People with kidney disease have to watch calcium consumption because their bodies cannot get rid of calcium through urine as they do not make urine any more. Some people even get a calcification of normal tissue and blood vessels because the calcium builds up. Dialysis does not rid the body of all excess minerals like the kidneys do.

  35. Sarah September 6 at 10:25 am

    Bravo on the long post, but your “you’ve swallowed the Kool-aid” comment proves that you are either naive, young, or both. Do you personally know any doctors? Do you have any doctor friends…seriously?? Well, I do. One D.O. Who is very bent on natural living as a means of both preventing and treating illness. I know a M.D. who is both an ER doctor, as well as running his own holistic health clinic. I met him when I worked in mobile communications and he was specifically in search of equipment that was low EMF. Please stop generalizing human beings; we all, regardless of what we do for work, have interests- have you considered that physicians might possibly enjoy reading the same things you do? While I agree that many doctors may be inflexible regarding changing information, as well as there existing some who will sell out just for the extra money from pharma “sales”, many actually get into this line of work to help people…it’s actually true. The idea is to be knowledgable and be in charge of your own health; by you “not trusting” ANY doctors, you have yourself “drank the kool-aid”.
    You don’t trust doctors…until you need one. And everyone does at some point.
    My advice- stop the generalization and find some type of physician you trust at can back up your knowledge.

    I don’t oppose making your own egg-shell calcium, I simply stated that it would be wise to discuss sumplementation with someone who is both familiar with your personal health profile, as well as someone who knows well about how it could possibly interact with other supplements. You cannot possibly think its okay to get all of your health advice from blogs?!? (no offense mama natural!)

  36. Nick Beck September 2 at 9:55 am

    Thank you for the information. When I was a kid I watched my aunt crush up her eggshells and baked them for a few minutes in the oven. I asked why she did that. She said that she fed them back to the chickens she was raising to replenish some calcium that they need and it helped them produce better eggshells. It all made since to me then as well as now.

  37. Keith August 26 at 10:21 pm

    Don’t be so ignorant, Sarah.

    • Julia January 11 at 1:09 am

      Dear Sarah, It isn’t that “all doctors” are ignorant to nutritional preventative health care. It’s that the the system is designed to weaken the individual’s well-being and too many cogs in the system (doctors, pharmacists, etc.) facilitate the profit guided system, at the cost of better living of their patients, in exchange for personal profit. These issues are never all or nothing, there is always grey area. The problem of ignorance/avoidance, among medical professionals and the pharmaceutical establishment, of the benefits of nutritional health care vs. invasive/dangerous procedures is real and it is very important for us to self educate because of this failing. We should discuss the issue with open minds. Attacking each other is a symptom of the problem. Best Regards, Julia

  38. Del Rene August 26 at 4:44 pm

    Thank you for taking the time to explain this process. I love homade wellness receipes. Do you have any other ones to offer? What do you know about orange peal ryne. ( if that is how you spell it..? Its not everyday a person uses it in a sentence :)

    Thank you,

    Del Rene :)

  39. Olivia August 24 at 2:56 pm

    Remember Calcium and Magnesium need one another to work properly. Mineral balance is the key when taking any supplement. The recommended ratio of calcium to magnesium is 2:1.

  40. Alpha Delta August 18 at 2:25 pm

    I suppose if you’re paying over $8/dozen for eggs online you’d better use the whole buffalo! I’d definitely use this in a toothpaste or take it with magnesium and ACV so your body can get the most out of it.

  41. ew0054 August 11 at 6:52 pm

    Thank you for making this information available. I am goign to begin saving my egg shells and try this!

    I think the Salmonella scare of eating raw egg yolks is over-hyped (I have been eating every day never got sick), but the concern for the shells is very real because of the direct exposure.

    Good tips to sterilize with boiling water and dry with oven.

  42. Keith Evans August 10 at 12:15 pm

    If you are relying on milk for calcium there are a couple of things you should be aware of. #1 The calcium content of milk (unless artificially supplemented) depends entirely on the diet of the cow, and modern dairy practices do not allow grazing the animal’s natural foods that contain calcium, ie green grasses. To raise butterfat content and facilitate industrial conditions dairy cows are fed mostly corn and soy meals, which are low in calcium. #2 Metabolizing butterfat requires calcium, as each fat molecule binds to two calcium molecules in the process. This means that drinking commercially produced milk could actually deplete existing calcium from your body, usually from the teeth and bones, or lock it into fat reserves.

    While I agree that egg shells are an excellent source of calcium, I question the availability of the mineral to the body in it’s raw form. I would suggest dissolving the ground egg shells in apple cider vinegar or lemon juice. This creates a form of calcium citrate that makes more of the calcium available to our digestive systems and diminishes the irritating effect the raw shells have.

    • Analita Kruse August 16 at 10:03 am

      Wonderful specification and RIGHT ON!, Keith! Thank you!

      • BJ October 8 at 12:55 am

        Keith you are so right about milk. Would like to add to yours a fact that cows milk was meant for baby calves. Also with corn and soy now being GMO and dangerous anyone who continues to add milk and dairy products to their diets is asking for more health problems. Also I would like to add that I have been misdiagnosed by doctors all my life and I am a grandmother. Since I started learning about eating healthy when in my mid 20’s I have enjoyed much better health. I am in my 60’s now and do not take or need any prescription drugs. My husband who is my opposite and visits a doctor 4 times a year is now on 3 drugs and is suffering bad side effects and can no longer sleep at night which is making him miserable and hard to live with. So no I don’t trust doctors except for broken bones and have kept myself healthy for years by reading alot of books and blogs and taking charge of my own health. I am sure alot happier and healthier than alot of people my age including my husband.

    • a khan January 6 at 11:05 pm

      a khan yes–all of the receipts i’ve seen cal for acid neutralizing — just remember you have other choices–since a lab spill event in college i am allergic to vinegar, & i really dislike the taste and harshness of lemon.
      one better (to me) choice is lime. i suppose grapefruit might work but there are other problems with it. same with high acid tomatoes. there are a number of other safe sources of sour=acid–sour cherries really are sour-like wise apples, grapes, ant one of the sourest- rubarb.
      thank you-arthur

  43. John June 9 at 9:45 am

    hello, can you please tell me what coffee grinder that you use? How long have you owned it? I use one and it doesn’t last very long when I use eggshells. Thanks for your help.

    • Julia December 30 at 7:31 pm

      I’m imagining using my masticating Omega juicer. I already grind coffee with it…. any thoughts?

    • Jeanne January 10 at 8:21 pm

      I use my Magic Bullet

    • Jeanne January 10 at 8:26 pm

      Seriously, this is the first and last time I will come to this site. I have never seen such mean and hateful people in my life…over egg shells for goodness sake. I sure hope your children are not reading this ! Good bye !

    • Brenna October 17 at 2:35 pm

      By using a mortar and pestle you can reduce the shells to a very fine powder that has no chunky or sharp bits. Just grind as normal and then if the bits are not small enough use the mortar and pestle until the consistency is to your liking.

  44. teresa May 21 at 11:29 pm

    i have always used the water that i use for hard boiled eggs to make other things, like broth or used it for when i am making rice or anything that requires water because i can see the difference. by that i mean, some of the calcium leeches into the water and then i use it for cooking next time i need water.
    my nails and teeth show it.
    so i have no problems by keeping/storing the used egg shells and then grinding them down and using them in other things. can’t wait to see what happens when i add it to my bread.
    thanks.

    • Dena October 19 at 11:54 pm

      Thank you Teresa for the great idea of using the water from hard boiling eggs! Great idea that I’ll start using.

  45. Julie May 17 at 7:23 pm

    Years ago, when I was expecting my twins and was lactose intolerant, my OB/Gyn told me if I didn’t get more calcium, he would make me crush up egg shells and bake them into muffins. I was horrified! Now I think, “Cool!”

    And the best way to absorb magnesium is to run a hot bath, pour in Epsom salt, light candles, put on soft music, and loll around in the tub. :) It’s also the best way to greet your husband on Friday evening.

  46. wanda March 4 at 7:33 am

    We have always fed the shells back to our chickens and they produce the best eggs and their shells are very thick. We do bake them first and then just crush them but we don’t have to pulverize them..I think I will def try this my husband and I have a lot of joint problems ..hoping this helps.. (ran across another link that showed how to use orange/lemon peels to make vitamin C by just drying out the peel and then pulverizing them too..so sounds like I need a coffee grinder! ) Thanks for the post!

  47. tara February 22 at 6:39 pm

    What if you OVERCOOK the egg shells?? I left mine in oven after baking at 200 degrees but then my husband jacked oven up to 350 degrees and did not know the egg shells were still in there! The powder is slightly brown color with a cooked smell. Not unpleasant at all but wonder if the calcium is no longer viable?

    Also, I did not boil the shells before baking them, is that okay?

    • Genevieve February 26 at 10:56 am

      Hi Tara,

      Unfortunately, I wouldn’t use :(. You probably are OK not boiling the shells since you’ll bake them and kill pathogens but not sure on that :)

  48. Joanne February 15 at 10:52 am

    How do you get all the egg whites off the shells? I tried making this the other day but couldn’t get all the egg white off…can I just grind it up with the shells?

    • Liz February 15 at 11:12 am

      Joanne… They are really slimey.. get as much as you can. When you boil and then bake them.. all of the salmonella (which is what you might worry about) goes away in the boiling process. (you will see little white bits at the top of the water that will rinse away. Then you bake them and that second heating process kills even more pathogens.

      If you are really worried and doing them in huge amounts, you can put them in tiny jars and boil the jars like you would a jam or jelly and that will seal the jar until you are going to use it. That will once again heat treat the product inside and kill more pathogens, while preserving it with an airtight seal. When you open it up a way to keep it fresh and away from bacterias is to keep it in the freezer. It is dryer than the fridge and pathogens are less likely to form again. :)

      Good luck!

    • Genevieve February 18 at 1:23 pm

      I do as best as I can. You might actually be seeing the membrane which also contains minerals so good to include.

  49. Liz February 14 at 5:14 am

    We have done this for years and supplemented our garden soil. It adds much needed nutrients to the soil. We save the shells (and coffee grinds as well!) and till them in to the ground.

    We also spread rings of egg shells around the base of plants. It prevents any slugs from crawling to the plants. They eat the bits of egg shells and die! DON’T TOUCH MY PLANTS! :)

  50. Shelly L February 9 at 11:27 am

    I made it as suggested…it is a bit too crunchy for sprinkling on your breakfast…at leaset mine was. I plan to grind it again with my Mortar and Pestle.

  51. devora January 22 at 1:26 pm

    If this needs to be combined with magnesium – then how would you do it?
    How would you put into chicken soup?

  52. Clarice O'Brien January 19 at 6:41 pm

    Hi Dennis, I am not sure about whether or not the eggshell powder dissolving in liquid or not, having never tried it myself, maybe others will know. But one thing you can try if you have never, and it’s so easy if you don’t mind eating it, is black strap molasses. It has to be black strap, not just plain molasses. It is available in many places. In a small serving (1 Tb.) it has a good amount of calcium, iron, and I do believe it is also a good source of magnesium and other important nutrients. I like to drink it in a glass of warm milk, it is very yummy. Another way is in tea as a sweetener, or just in hot water, many ways to consume it in liquid form. I buy it in bulk and keep it in the fridge. Hope this helps, wish I was more knowledgeable about the eggshell powder.

  53. Nancy January 18 at 9:30 am

    Have been grinding up egg shells to a fine powder for years and putting at the base of my plants. Water in well and making it bioavailable to them. Makes them stronger and better able to resist disease.

  54. Linda January 18 at 6:11 am

    I think I would make capsules filled with the ground egg shells using veggie capsules, or mix it in a smoothie.

  55. Donna January 18 at 12:41 am

    When I boil eggs for egg salad I save the water the eggs were boiled in. I cool it and use it to water my plants. I clean and save all my egg shells, crush them small and put them in the soil that grows my tomatoes….. I’ve never contemplated eating them myself… something to think about for sure.

  56. Pamela Lukasek January 17 at 10:10 pm

    This is not totally on point but I found that if I put a whole egg in the soil when I plant tomatoes, they give me wonderful tomatoes that are bigger and better. Also, raising Chickens is very popular and not very hard to do, I have a flock of eight and I get about five eggs a day. I know for sure that they are fresh. Smiles

  57. Clarice January 17 at 9:59 pm

    I don’t eat a lot of dairy so I get my daily calcium from black strap molasses. Just a tablespoon can give you about 20% daily value of calcium, not to mention a good source of iron and many other nutrients. But I’m going to do the eggshell thing soon as well.

  58. Karen Pruneau January 17 at 9:54 pm

    Great now I don’t feel so weird. 14 years ago I was pregnant and refusing to drink milk as my first child had a milk allergy and that’s where I got my extra calories from with him. But with the second child I found myself munching on eggshells even when I was grossed out by the idea.

  59. Sarah H December 22 at 5:47 pm

    I’ve taken to putting 1/2 tsp of eggshell into a shot of kumbucha. The kumbucha reacts with the eggshell and keeps it in small clumps (easy to swallow) so I’m not trying to down eggshell slush. Make sure to put dry into wet and not the other way around. After I drink the first shot I rinse the glass with a second shot of kumbucha to get all the shell goodness. I figure the extra acid from the kumbucha will help me digest the calcium better anyway.

  60. Tristi December 22 at 10:15 am

    Im in the process of tapering off methadone. I juice every morning, eat very healthy, eat kefir grains and take apple cider vinegar. Im so happy you posted this because the methadone really messes with your bones and teeth : ( and my muscles always ache. Im going to do this! I hope I feel a difference, im sick of my body always aching. Thank you!

    • Gi April 29 at 12:47 am

      Most likely You need magnesium not calcium. Magtein is an easily absorbable form of magnesium. Good luck. Also depending on your metabolism some of the above that you’re eating might not be serving you at the moment.

  61. AJ December 19 at 7:51 pm

    You are absolutely correct, too, Teri…..the only soy one should consume is fermented soy.

  62. Elly December 19 at 3:33 pm

    Great idea!
    You also need to ensure that you have enough magnesium otherwise the body won’t absorb calcium properly. Many people are magnesium deficient. Easiest way is to take Mag Phosphate homeopathic tissue salts (supplements can be too strong and upset your stomach).
    I have used egg shells on plants before.
    Great post, thank you.

  63. nicole December 19 at 3:15 pm

    I may have missed it reading above- but what if you hard boil eggs first- does that change the ability to use the shells for calcium? thanks,

  64. Leslie December 19 at 3:02 pm

    I rinse and crush my eggshells and throw them around my plants. I also toss my leftover teabags in my garden.

  65. Holly December 14 at 10:15 pm

    Chickens seriously ARE cannibals. :) They’ll eat ANYTHING. They love meat of all kinds, especially chicken meat! Yes….I raise chickens. :)

  66. maria November 2 at 5:47 pm

    How long can I let the shells sit after cracking the eggs before cooking them for this process? A couple of days? or does it have to be right away?/

    • Genevieve November 4 at 11:48 am

      I just used up my eggs as normal so it took me about a week to have a dozen shells. Just put used shells back into egg carton and store in fridge.

  67. Dallas October 30 at 10:03 am

    I made this and used a Magic Bullet knock off to process the shells but the powder doesn’t dissolve in water, it all sinks to the bottom because the grinds are too large. What can I use that will make it finer? I have been encapsulating it for now but that is tedious.

    • Dina B December 20 at 6:49 pm

      Dallas get a coffee grinder, thrift store, yard sales or watch the Sun. ads.

  68. Melissa October 17 at 8:00 pm

    Awesome info! We have organic, soy free chickens and I didn’t realize how much I can do with the shells. I was just composting them. Thanks for the tips.

  69. Carrie October 4 at 3:33 am

    I live in Hong Kong and the best I can buy is organic, pastured and free-range eggs. I’ve emailed the company in New Zealand, they said their chicken mostly are fed on grass but are supplement with soy (and other stuff). Is a little bit of soy okay? Or absolutely no no for eating the egg shell?

  70. Alicia October 2 at 6:55 pm

    I don’t have my own chickens but the farmer I get my eggs from are pastured, organic, no soy or gmo and only $3.25/doz. Love them. I recently did this and added it to my remineralizing tooth powder.

    • Genevieve October 2 at 8:48 pm

      Lucky! That’s a great price for eggs!

  71. Kat October 2 at 2:15 pm

    OH and – do I need a dedicated coffee grinder for this? I don’t want my husband to be upset for ruining his coffee. :)

    • Becky October 2 at 6:07 pm

      I actually just started making powdered eggshells a few days ago. I tried a blender and it really doesn’t work and I have a high-powered Blendtec. I have read about people using rolling pins and other things. But I figure, the cost of a calcium supplement–you’ll be saving a lot of money with eggshell calcium. I just bought a $15 coffee grinder, even though I don’t drink coffee. You may just want to buy a second one…

      • Clarice January 17 at 10:08 pm

        We use a spare coffee grinder for whole spices, could also use for egg shells.

    • Dina B December 20 at 6:39 pm

      Kat, I have been using eggshells in my coffee for 50 years. I just put one or two shells in the grinder when grinding my beans for 1 pot of coffee; it smooths out the bitterness. It Won’t ‘ruin’ his coffee at all.

  72. Kat October 2 at 2:15 pm

    How much does a dozen eggs make? How best to consume? Does putting them in stock like several people mention up the calcium content of the stock?

    • Genevieve October 2 at 8:50 pm

      A dozen eggs makes about 1/3-1/2 cup of powder. Yes, I would imagine putting the shells in stock would only up your mineral content, particularly calcium.

      I use our coffee grinder and just clean well. Since you only need to make every once in awhile, not a biggie. It grinds them well.

  73. Alison October 2 at 1:51 pm

    I make egg shell water and drink about 1/4 cup a day. This is another great way to do it too!

  74. Ashley H October 2 at 1:48 pm

    We’re raising soy-free pastured egg layers- they should start laying any time now. I’ll let you know when we have extra eggs to sell. :) In the mean time, I’m totally making this!

    • Genevieve October 2 at 8:47 pm

      You go girl! I would LOVE to buy your eggs :)> You’re doing a great service by raising chickens the right way!

  75. Natalie Dean September 27 at 12:19 am

    This is great! Thanks so much for the tip and recipe. I’m a nursing mother to my 2 1/2 year old and since having her I’ve had serious muscle soreness- wondering if my calcium levels aren’t too low due to all the breast feeding?? I hope to find results with this and will let you know! By the way, is the water/shell concoction flavorless (I hope)??

    Natalie

    • Karen September 27 at 1:31 am

      DON’T FORGET LADIES – U CAN’T ABSORB CALCIUM WITHOUT ADEQUATE MAGNESIUM & FAR MORE OF AN ISSUE.

      • Genevieve September 27 at 7:04 am

        I hear you Karen! The great thing about eggshell calcium is that it also includes other micronutrients, the way nature intended. I also recommend daily use of a magnesium oil. XO

    • Genevieve September 27 at 6:59 am

      Hi Natalie,

      Yes, prolactin, which stimulates breast milk, also depletes calcium so very important for a nursing mama to get enough calcium.

      There is a very faint flavor. I simply mix the shells in a 1/4 c. of water and chug down. Don’t taste a thing that way.

      XO!

  76. Cynthia September 26 at 12:09 pm

    Taking eggshell calcium gave me charlie horses in my foot, so make sure you are getting enough magnesium as well.

  77. Megan September 26 at 7:09 am

    My family has pet ducks and we did this for them since the females have calcium problems during laying seasons. Never knew it was ok for us to eat too.

    • Genevieve September 27 at 7:00 am

      Cool :) It even works with oyster shells too but harder to get!

      • Kristin October 3 at 8:24 am

        Realy? That’s great news for me! My dad owns a wholesale oyster business, so I can get all of the oyster shells I want for FREE… And I can get them already in a powder form, which is awesome, because it would be extremely hard to get an oyster shell to a “dust” form… They are very hard and very thick!
        Only one question though… are oyster shells as effective as egg shells?
        I need to make sure I’m getting plenty of calcium, I don’t consume even half of the calcium I should.

        • Rae January 17 at 10:21 pm

          I don’t know in humans, but we give oyster shell to the chickens, then their shells are harder and thicker. And I have seen oyster shell calcium supplements.

          • Kathy Ebert January 26 at 3:40 am

            Yes, oyster shell is a good way to get calcium and is safe also. For years I’ve been buying oystershell calcium at CVS stores, its the best I’ve found.

        • Samantha March 3 at 4:50 pm

          You should start a business with the shells :)

  78. Mindy September 25 at 3:22 pm

    Awesome, I am definitely going to try this! I am always running low on calcium.
    By the way, I’m sure many girls here would love to see a video on what started you on your natural living kick all those years ago. Especially the food! I know many of us have started living naturally because of a health crisis, where we had to change or risk getting sicker. That has been my experience. It would be interesting to hear!

    • Genevieve September 27 at 7:03 am

      Thanks Mindy! Did you see my video on 6 tips to kick sugar? That kinda goes into my “come to Jesus” moment. I also am coming out with ebook very soon that goes into this as well. XO

  79. Monica September 25 at 1:47 pm

    Awesome! I think I’m going to add this to tooth powder instead of buying the supplements to grind up!

      • Monica October 10 at 5:43 pm

        I’m especially excited because a farmer sells “real” free-range, gmo-free eggs for $2.50 a dozen! That’s cheaper than normal eggs at the store! The yolks are so orange, they’re beautiful!

  80. Cyndi September 25 at 12:00 pm

    Oh weird!! I never knew! It might take getting past a lot of mental blocks to do that though… seems kinda gross! But awesome that God created the world with abounding resources all around us!

    • Genevieve September 27 at 7:04 am

      Very cool indeed. You can also do with oyster shells!? A great, inexpensive way to get in some more minerals.

      • Vera October 5 at 12:37 pm

        You are right! In fact, because producing an egg takes a lot of calcium from the chicken, oyster shell is often ground up and mixed in with the feed. Chicken handlers will examine the shells and if they are too light (for brown egg producing chickens) or too thin oyster shell is given to help the chicken replenish this supply. :)

    • Adell March 7 at 8:57 am

      I purchased a dozen of organic eggs from Kroger’s brand. These eggshells are brown. Is this okay to make calcium from? Thank you so much.

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  1. […] of effort we can use egg shells to develop our own home made calcium supplement at home for use in our own diets. Just one more way we can benefit from having our own chickens in our own […]

  2. […] a pure calcium supplement- please check with a Nutritional Therapist). Mineral powders and egg shells can be very effective forms of supplementing the diet. The way I like to ensure lots of calcium in […]

  3. […] How to Make Eggshell Calcium (and Why You’d Want to) – Mama Natural. Share this:TwitterFacebookPinterestMorePrintEmailRedditStumbleUponGoogle +1TumblrDiggLinkedIn Tags: budget, doomsday prep, doomsday prepper, economic collapse, food, homestead, medical, prepper, recycle, reuse, shtf, survival, survival information, survival skills, teotwawki […]

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