Today, every long-standing, accepted, and recommended medical policy or protocol is subject to scrutiny, investigation, doubt, or revision. These tenets, once regarded as “gospel” exist, it seems, so that other investigators can disprove them or develop an alternate suggestion.
One such policy that was “set in stone” for decades is the routine taking of calcium supplements with the intent being to reduce fracture risk by reducing bone mineral loss. Ninety-nine percent of the calcium in our bodies is in our bones and teeth. Healthy adults without osteoporosis do not have increased risk of fracture, according to numerous clinical trials. Thus, “Current evidence does not support routine calcium supplementation in other-wise well-nourished adults. In contrast, individuals with osteoporosis often require adequate calcium and vitamin D intake for osteoporosis management.”
It now seems the risks of taking calcium, such as kidney stones and GI symptoms, exceed the benefit, or lack thereof, of taking supplemental calcium. Also, vitamin D, important for adequate intestinal absorption of calcium, has come into question. “Evidence from randomized trials…has shown that calcium plus vitamin D supplementation does not consistently produce a clinically meaningful reduction in fracture risk.”
“Calcium supplementation should not be routinely prescribed for bone health without first evaluating dietary calcium, vitamin D status, and fracture risk. Evidence suggests an individualized approach to calcium supplementation rather than routine use.” A history of kidney stones, or elevated cardiovascular risk, warrants caution when considering taking calcium and probably should make you avoid it.
Bottom Line: Routine calcium supplementation in healthy, well-nourished adults may offer limited benefits, but poses risks (stones, GI symptoms) that are greater than the benefits. Individualized assessment of need is advised before prescribing supplements.
Reference: van den Huevel M. Evidence Questions Routine Calcium Supplementation for Bones Medscape 2026 March 11. .”
