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What could prevent the absorption of calcium?

Dariush Mozaffarian, MD
Internal Medicine
Certain factors affect calcium absorption. You need stomach acid, which typically declines as you grow older, and sufficient vitamin D. High phosphorus consumption and a high-fiber diet interfere with calcium absorption, too, as can iron and substances called phytates (found in seeds, nuts, and grains) and oxalates (in beets, rhubarb, and spinach). Over time, not getting enough calcium can lead to osteoporosis.
Several factors can affect your calcium intake and absorption. If you are allergic to dairy products, for instance, you may not get enough calcium from other foods. If you are following a strict diet that does not allow for extras like skim milk and low-fat yogurt, that too eliminates necessary bone-building foods. Diets high in protein rob bones of the calcium needed to stay strong. So does drinking more than two colas or more than two cups of caffeinated coffee a day. If you have two or more alcoholic drinks daily, you are at a higher risk for low bone density. Even if you take calcium supplements, you might not be taking them correctly. These supplements are best absorbed when taken throughout the day, not all at once.
The Osteoporosis Cure: Reverse the Crippling Effects With New Treatments

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The Osteoporosis Cure: Reverse the Crippling Effects With New Treatments

Once considered a progressive, incurable disease, osteoporosis can be prevented and/or treated in both early and later stages thanks to recent breakthroughs and medical developments. Now a medical...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.