People over the age of 50 often take vitamin D supplements thinking they’re making their bones stronger and preventing osteoporosis.
But a new review of past studies finds the supplements don’t usually increase bone density. And researchers said they aren’t necessary for most healthy adults.
Among people with osteoporosis, bones become weak and fragile due to the loss of bone density that often comes with aging. Fragile bones are more likely to break. A common prevention strategy is to take calcium and vitamin D supplements. Vitamin D is needed for the body to absorb calcium. But it’s not commonly found in foods, unless they’re fortified, like most milk. The body makes vitamin D after skin is exposed to sunlight.