Extra Calcium May Not Protect Bones That Much
Calcium may not be as beneficial for bones as once thought, according to two new reports from New Zealand published in the journal BMJ.
Researchers analyzed the effects of calcium intake on bone density and risk of fracture in adults over 50 years of age.
For their first report, researchers analyzed results of 59 previous randomized controlled trials of calcium involving more than 12,000 people. They found increasing calcium intake increased bone-mineral density by up to 2 percent, but they ultimately concluded that this increase was not significant enough to reduce fracture risk.
For their second report, taking 40 studies of people’s diets and analyzing them, researchers found no link between calcium consumption and fracture risk. The amount of calcium consumed seemed to neither increase nor decrease fracture risk. While another look at 26 randomized controlled trails of calcium supplement consumption showed some reduction in fracture risk, the overall conclusion was that the evidence was not significant.
Experts are now calling for reconsiderations of suggesting calcium supplements for older people.