Calcium is a mineral that gives bones their structure and strength, while vitamin D is a hormone that supports bone growth, according to Natalie Allen, RD, a clinical associate professor of nutrition ...

Everyone needs vitamin D, a nutrient that helps the body absorb calcium and phosphorous to build stronger bones and teeth. It is created in the body naturally through skin exposure to sunlight, as ...

There was no significant difference in their blood levels, suggesting that it's efficacious to take a week's worth or even more at one time. Those popping the vitamin daily can safely double up if ...

When calcium and vitamin D were given, the risk was reduced by about half, to about 18 cancers per 1,000 women, comparedto a placebo, said Dr. Pam Goodwin, an oncologistwith MountSinai Hospital in ...