Caffeine and Calcium: Is Coffee Bad for Your Bones?

Updated: March 3, 2023

Cups of coffee on a bed of coffee beans on a picnic table

Reviewed By:
Dr. Liz Lipski – AlgaeCal Scientific Advisory Board Member
Professor and Director of Academic Development, Nutrition programs in Clinical Nutrition at Maryland University of Integrative Health.

The Controversy Surrounding Caffeine and Bone Density  | Why Coffee is Actually Good for You | Boosts Antioxidant Levels | Lowers Inflammation  | Can Coffee Increase Urinary Excretion Of Calcium? | Caffeinated vs. Decaffeinated Coffee | The Bottom Line on Coffee and Bone Density

If the best part of waking up is coffee in your cup — you’re in good company. It is estimated that an average American consumes around 3 cups of coffee each day

Unfortunately, somewhere along the way an unsettling association was made between coffee and bone density loss. 

Over time, conflicting information about caffeine and bone health developed which led many to wonder, “Is coffee bad for osteoporosis?” 

And since naysayers haven’t definitively answered this question, you may be concerned that your beloved morning cup of Joe could be causing damage to your bones.

As it turns out, in addition to the intoxicating aroma, delicious flavor and jolt of caffeine, drinking coffee actually offers health benefits.

But before we dive into all the incredible health benefits of coffee, let’s address the controversy brewing around coffee and its effects on bone health. Then, we’ll cover the incredible health benefits of this beloved beverage.

The Controversy Surrounding Caffeine and Bone Density

Despite the lack of scientific evidence, coffee has been associated with poor bone health for years. While there are some individuals who should not have coffee and/or caffeine due to medical conditions or pregnancy, it’s not necessary to stay away from coffee for the sake of your bones.

Lara Pizzorno, MDiv, MA, LMT, author of “Healthy Bones Healthy You!” will spill the beans below in a wonderfully informative video all about coffee and bone health. But for now, let’s get to the heart of the matter and see what the science really reveals about coffee and bone density.

Papers evaluating the effect of coffee on bone were published by Korean researchers in the Journal of Korean Family Medicine in 2014. 

The Korean researchers evaluated the effects of coffee consumption on bone mineral density in premenopausal women. 

The authors looked at data from the 4th Korean National Health and Nutrition Examination Survey. This survey was conducted through 2008-2009 and consisted of 1,761 premenopausal women. 

Researchers found no significant association between coffee consumption and bone mineral density of the femoral neck, the femur, or the lumbar spine.

This is promising news. But considering the limitation of a food questionnaire-based, non-intervention study, the findings warrant a more comprehensive study.

Why Coffee is Actually Good for You

Drinking several cups of coffee daily is not only just fine, but actually highly beneficial for most people. 

It’s been found that drinking coffee is significantly associated with higher T-scores – hence a lower risk of osteoporosis in men and premenopausal women.
What’s more, recent evidence suggests that coffee consumption can help reduce the risk of several diseases: type 2 diabetes, Parkinson disease, Alzheimer disease, cardiovascular disease, and cancer.

Person pouring coffee

Boosts Antioxidant Levels

Coffee (either caffeinated or decaffeinated) is actually one of the most significant sources of antioxidants in the American Diet.

And when it comes to antioxidants, the big star in coffee is polyphenols.

What makes polyphenols so special when it comes to bone health specifically, is it has been shown to influence proliferation of osteoblasts (the cells that make bone). Even at low concentrations, polyphenols can affect bone metabolism.

Lowers Inflammation

Coffee lowers a hormone secreted by fat cells that promote inflammation called leptin. 

Chronically elevated leptin levels are associated with obesity, overeating, and inflammation-related diseases including, here we go again, type 2 diabetes, cardiovascular diseases, and most important to us, osteoporosis.
And that’s just the tip of the iceberg. Here are 9 more surprising health benefits of coffee.

Can Coffee Increase Urinary Excretion Of Calcium?

As you may know, there’s been some news swirling around about caffeine and calcium absorption.

Namely, that caffeine can increase the loss of calcium in the urine and thereby decrease calcium absorption in the body.

It’s true that coffee can increase our urinary excretion of calcium – but only slightly. 

This can easily be offset by taking your coffee with some form of calcium-containing milk, regularly eating calcium-rich foods, and taking a good calcium supplement that’s proven to reverse bone loss. 
By maintaining a balance between your caffeine and calcium intake you’ll be in a much better position to protect your bones.

Caffeinated vs. Decaffeinated Coffee

Of course, no coffee-related controversy would be complete without discussing caffeinated versus decaffeinated coffee.

Decaffeinated coffee is simply coffee beans that have roughly 97% of their caffeine removed prior to roasting. While this may slightly change the color and aroma of decaffeinated coffee beans, it doesn’t impact their nutrition. 

When it comes to bone health, there is speculation (not concrete studies) that since decaf coffee tends to be a specific type of coffee bean naturally higher in acid, it could have a negative impact on bones.
Again, there is no study proving this, so it’s no reason to switch to caffeinated coffee or give up coffee altogether. Lara Pizzorno will also share more information about decaffeinated coffee in her video below or read the transcript, here.

The Bottom Line on Coffee and Bone Density

As you can see, you can still enjoy your morning (and afternoon) coffee and have healthy bones.

In fact, drinking coffee may actually help improve your bone health! So don’t worry about having that cup, or two or three each day– so long as you’re not dousing it in bone-depleting sugar!

That said, the best route to healthy bones is a healthy diet with lots of calcium rich-foods, along with an active lifestyle. Better still, add in the world’s only calcium supplement guaranteed to increase bone density, year after year

It’s guilt-free as well: coming from a natural, plant-based calcium source that also naturally contains all 13 trace minerals your bones need for optimal density.

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  1. Vicki

    January 26, 2022 , 1:53 pm

    Is this also true if caffeinated black teas? Thanks for such helpful information!

  2. Kirby Johnson

    January 31, 2022 , 3:52 pm


    Great question! We discuss the health benefits of black tea in our blog post HERE. Please don’t hesitate to let us know if you have any further questions!

    – Kirby @ AlgaeCal

  3. shirlee Hachman-chatterton

    January 26, 2022 , 3:24 pm

    This has been so timely for me, I love coffee. Thank you so very much Dr. Pizorno for the information.
    I’ve been struggling with giving up my coffee.
    After hearing your wonderful report, I’m happy and ready to go have a good cup of coffee!!!Thanks!!!

  4. Kirby Johnson

    January 28, 2022 , 10:22 am


    We’re so happy to be of some help! You can always reach out if you have any follow-up questions; we’re always available to support you on your bone health journey <3

    - Kirby @ AlgaeCal

  5. Anne Farrington

    January 26, 2022 , 9:30 pm

    I’m so happy to hear this! I basically have one cup in the morning with a sugar free nut creamer; delicious ?

  6. Kirby Johnson

    January 28, 2022 , 10:14 am


    So happy to hear you found this information helpful! And your morning routine sounds absolutely divine 😉 Enjoy!

    – Kirby @ AlgaeCal

  7. Doreen Pinkerton

    January 27, 2022 , 7:52 am


  8. Kirby Johnson

    January 28, 2022 , 10:12 am

    Hi Doreen,

    You’re so welcome! Please feel welcome to take advantage of all the free resources available on our BLOG. We’re always available for any bone-health questions you might have!

    – Kirby @ AlgaeCal

  9. Linda johnson

    January 27, 2022 , 10:19 am

    Thanks for the coffee info. I drink less than 3 cups per day. This makes me happy. Praise God for ALGAE CAL PLUS and STRONTIUM.

  10. Kirby Johnson

    January 28, 2022 , 10:38 am


    We’re so pleased to hear you found this article helpful 🙂 We pride ourselves on providing current and accurate information to support our customers on their bone-health journey and always encourage you to discuss these topics further with your doctor. Enjoy your coffee!

    – Kirby @ AlgaeCal

  11. Suzanne

    January 27, 2022 , 12:15 pm

    I only drink one cup of coffee in the morning. I drink water or herbal teas and also black teas. Are there any herbal teas that I should take to help with my bone density or is it better to drink regular tea. Thanks

  12. Elena G Johnson

    January 28, 2022 , 2:17 pm

    I am from Italy I only drink espresso for 2 reasons 1st because like it and because I don’t get problems with it because of the acid situation. American coffee and i aren’t getting along well. I don’t drink much espresso because I have hard time sleeping as it’s. Thanks for the information. Have a great day.Elena

  13. Kirby Johnson

    January 31, 2022 , 3:27 pm


    Great question! You can learn more about the teas impact on bone health using our full breakdown HERE. Though it’s lacking conclusive scientific evidence, there is a promising herbal tea we discuss in the article that stands out as a potential aid for better bone health 🙂

    – Kirby @ AlgaeCal

  14. Lynda

    January 27, 2022 , 6:47 pm

    Noticed the article only mentions premenopausal women. Odd.
    Makes me think it’s not so ok for post-menopausal women.

  15. Kirby Johnson

    February 2, 2022 , 12:10 pm

    Hi Lynda,

    Great observation! This post highlights a few studies that happened to look at premenopausal women. In saying that, there are also studies looking at caffeine intake in postmenopausal women! For example, this study looked at caffeine intake in 138 postmenopausal women and found no negative associations between caffeine and bone density. Another study involving 4066 postmenopausal women found that subjects with the highest coffee intake had lower odds of osteoporosis compared to subjects with the lowest coffee intake. Hope this helps ease your concerns, Lynda! Feel free to let us know if you have any other questions.

    – Kirby @ AlgaeCal

  16. Diana

    January 28, 2022 , 6:34 am

    Thank you for sharing the information about coffee. I could not watch your video because there is no closed caption. I am deaf.
    i like to drink black tea with chai in the morning. Sometimes I drink green tea or herbal tea after noon.
    Is coffee better than black tea?

  17. Kirby Johnson

    January 31, 2022 , 3:17 pm


    Thank you so much for reaching out – sorry our content was convenient and accessible! We’re passed this along to our team for further consideration. Even though Lara’s video is lacking closed captions, we did create a transcript which can be found hyperlinked in the sentence above the embedded video. Black tea with chai sounds absolutely fantastic! While coffee and tea both offer unique bone health benefits, it’s difficult to determine if one is inherently “better” than the other. If you’re interested, you can read more on the benefits that tea offers HERE. You’re always welcome to discuss these nuances further with your doctor!

    – Kirby @ AlgaeCal

  18. JKL

    January 28, 2022 , 7:20 am

    I thought it was the acid in coffee that was bad for bone health. And coffee is of course a lot of acid in most accounts. I’ve been trying to stay more alkaline and decreasing my coffee (I do a one part decaf to one part low acid coffee to two parts Teeccino herbal coffee) acid intake. Any thoughts or information on the acid effects of coffee on bone health?

  19. Kirby Johnson

    January 28, 2022 , 2:57 pm


    Seems you’re doing tremendous work to support your bone health! While there is speculation that the acid in coffee (specifically decaf) could have a negative impact on bone health, there aren’t any studies to support this concern. As a result, there’s no reason to switch to caffeinated coffee or give up coffee altogether. Hope this was helpful! You’re welcome to discuss this topic in more detail with your doctor and nutritionist if you’d like any additional information.

    – Kirby @ AlgaeCal

  20. Bernice Yuzik

    January 28, 2022 , 12:39 pm

    Thank you for this information. Now I can enjoy more than 1cup of coffee a day!

  21. Kirby Johnson

    January 28, 2022 , 1:31 pm

    Hi Bernice,

    So happy to hear you enjoyed our blog article!

    – Kirby @ AlgaeCal

  22. Julie Gorman

    January 28, 2022 , 12:43 pm

    When it comes to decaf, what about the method of decafination? Some use chemicals, some don’t. Those that do, what about any chemicals that remain in the coffee, are these harmful?
    Thank you.

  23. Kirby Johnson

    January 31, 2022 , 3:35 pm


    That’s a great question! While we don’t have any information regarding possible chemical remains from the decaffeination process, you can avoid any potential complications by purchasing coffee that has been decaffeinated using water rather than chemical solvents. This method is environmentally friendly, chemical-free, and offers the same decaffeination benefits. Buying organic, fair-trade, fair-labor coffee from organizations that practice sustainable harvesting will further ensure the quality and purity of your coffee.

    – Kirby @ AlgaeCal

  24. Susan Braund

    January 28, 2022 , 1:40 pm

    For the last six months my systolic blood pressure has been increasing. Is there any connection with Algae Cal and blood pressure? I quit for a while but have been back on Algae Cal for a few months. Is there a relationship?
    Thanks, Susan

  25. Kirby Johnson

    February 1, 2022 , 4:02 pm

    Hi Susan,

    Thank you for reaching out; we’re so sorry to hear you’ve experienced an increase in systolic blood pressure. Calcium, when properly balanced by magnesium (as it is in AlgaeCal Plus) hasn’t been found to increase blood pressure. Our Bone Health Expert, Lara Pizzorno states that, “A lack of magnesium can contribute to the lining of our blood vessels not being able to relax as effectively, which can increase risk for elevated blood pressure. AlgaeCal Plus is providing you with a significant amount of magnesium, 350 mg, which is in 2:1 (calcium:magnesium) balance with the calcium it provides.”

    If you’re experiencing an increase in blood pressure, Lara has suggested trying the following: “Take some additional magnesium (150 mg of magnesium citrate) along with 50 mg of pyridoxal-5-phosphate. This is the active form of B6 which helps get magnesium into our cells where it does its work for us, including relaxing blood vessels.” We’d encourage you to discuss this with your doctor to determine if it’s an appropriate option for you.

    You might also choose to cease taking our supplements entirely while monitoring your blood pressure to help determine the source of what you’re experiencing. While it’s highly unlikely that supplementing with AlgaeCal Plus has contributed to the high blood pressure you’re experiencing, your body is the ultimate arbiter of what works for you and we encourage you to trust yourself. Please keep us updated and don’t hesitate to reach out for additional information. We’d be happy to provide further resources for your consideration.

    – Kirby @ AlgaeCal

  26. alice

    January 31, 2022 , 10:20 pm

    It’s so good to know that drinking coffee doesn’t have bad effects on my bone. I’ve stopped drinking coffee for months since i was diagnosed with osteoporosis. I replaced it with dirnking ginger tea, turmeric and ginseng tea. Thanks for the info , I can add coffee with my morning drink again.

  27. Kirby Johnson

    February 1, 2022 , 3:48 pm


    Those all sounds like tremendous ways to support your bone health!

    – Kirby @ AlgaeCal

  28. Pamela Panetta

    May 10, 2022 , 10:39 am

    I have been caffeine free for over a year now as I thought it was a good health choice. I drink decaf or decaf green tea but still miss the morning caffeine jolt!

  29. Deborah Torchia

    May 10, 2022 , 4:37 pm

    I was interested to know if decaf coffee lacked nutrition, and I’m glad your article explained it doesn’t. I enjoy my coffee but can’t take the caffiene.

  30. Barbara Alpert

    May 11, 2022 , 11:56 am

    So glad to hear that coffee is good for osteoporosis. I am not a big coffee drinker, but I am a big fan of not having to give up all good things!

  31. Sheila Lorentzen

    May 14, 2022 , 7:39 pm


  32. Sharon Van Boven

    May 15, 2022 , 3:14 pm

    Very informative!! And I’m a huge coffee lover! Thank you for this impactful article!!

  33. Cindy Callaway

    May 15, 2022 , 5:53 pm

    Enjoyed this article

  34. Jan Hewson

    May 20, 2022 , 7:58 am

    Very interesting!

  35. Jill Davies

    May 25, 2022 , 12:08 pm

    Good article and very enlightening but I’ve never had a cup of coffee in my life

  36. Rita Spears

    May 25, 2022 , 9:38 pm

    Interesting information

  37. Betty Warrington-Kearsley

    May 26, 2022 , 7:16 am

    Very important info on coffee’s caffeine all being beneficial. I traditionally drink it daily without milk or cream (organic). Which I may now consider adding a little. But I do love the strong taste of black coffee!
    Glad to no longer feel guilty about loving coffee because of my osteoporosis.

  38. Denise Farrell

    May 26, 2022 , 1:40 pm

    Happy to know coffee is good for you. I drink it with 2% milk and only 2 cups a day!

  39. Cindy Upchurch

    May 28, 2022 , 6:13 pm

    Thank you for all this great information

  40. Patricia Carroll

    June 3, 2022 , 3:02 am

    Good news about coffee

  41. Joanne Lazar

    June 9, 2022 , 4:54 am

    This was very helpful.

  42. Dianna henry

    June 9, 2022 , 7:15 am

    Darn…I love coffee but the caffeine puts me on the ceiling and decaf acid gets my stomach…so I indulge with friends occasionally. It a comfort food I used to have with my Grandpa! With real cream!

  43. Betty Skelding

    June 9, 2022 , 7:59 am

    Lara thank you for this great information I was concerned about drinking my decaf coffee.I didn’t know all the good benefits of coffee

  44. Julie Meadows

    June 28, 2022 , 1:17 pm

    This is interesting research for coffee drinkers, but what black teas? Realize there is greater variety among tea varieties, but is there any research??

  45. Kirby Johnson

    June 29, 2022 , 4:12 pm


    Tea and bone health? You bet! You can find our complete breakdown of 7 popular types of tea on our blog HERE. Please be sure to let us know what you think <3

    - Kirby @ AlgaeCal

  46. Maggie

    June 20, 2023 , 6:19 am

    What calcium is the best for some one in theirs 60 ??
    And thank you for the information I was about to stop drinking coffee, because a friend say that it was but for me, since I had a full hysterectomy done .

  47. Brianne AlgaeCal

    June 20, 2023 , 9:29 am

    Great question, Maggie! While calcium is a very important mineral needed to support the bones, the bones actually require 13 minerals, and 3 vitamins to be fully supported. AlgaeCal Plus is the only calcium supplement that will provide you with all 16 of these nutrients and that’s clinically supported, by 3 studies, to increase bone density – at any age!

    If your goal is to to increase bone density, then we’d also recommend Strontium Boost for best results, as this will help you to see results 2-3 times as fast! We offer these both together in our Bone Builder Pack! Check out our clinical research HERE for more information 🙂

    – Brianne @ AlgaeCal

This article features advice from our industry experts to give you the best possible info through cutting-edge research.

Lara Pizzorno
MDiv, MA, LMT - Best-selling author of Healthy Bones Healthy You! and Your Bones; Editor of Longevity Medicine Review, and Senior Medical Editor for Integrative Medicine Advisors.,
Dr. Liz Lipski
PhD, CNS, FACN, IFMP, BCHN, LDN - Professor and Director of Academic Development, Nutrition programs in Clinical Nutrition at Maryland University of Integrative Health.,
Dr. Loren Fishman
MD, B.Phil.,(oxon.) - Medical Director of Manhattan Physical Medicine & Rehabilitation and Founder of the Yoga Injury Prevention Website.,
Prof. Didier Hans
PHD, MBA - Head of Research & Development Center of Bone Diseases, Lausanne University Hospital CHUV, Switzerland,