aging

Should you get a blood test to see if you're deficient in vitamin D? It sounds like such a good idea, seeing as how most people don't get enough sunshine to make vitamin D themselves. And the tests are becoming increasingly popular.

But there are problems with making vitamin D tests a standard part of preventive medicine, a federal panel said. The U.S. Preventive Services Task Force said Monday there's not enough evidence of benefits or harms to recommend vitamin D testing for all.

New Studies: Low-Salt Diet May Be Harmful

Aug 14, 2014

A set of three studies published in the New England Journal of Medicine show that people who consumed less than 3,000 milligrams of salt per day were more likely to have a heart attack or stroke, and more likely to die, than people who consumed between 3,000 and 6,000 milligrams per day.

Average U.S. daily salt intake is about 3,400 milligrams, but groups from the World Health Organization to the American Heart Association recommend significantly lower daily consumption.

We're all getting older. And in the U.S., the population is aging pretty quickly.

Obesity, sedentary lifestyles and all, we can expect to live longer than ever.

An American boy born in 2008, for instance, can expect to live to the ripe old age of 75, according to the U.S. Census Bureau. For girls, it's 80. Back in 1960, a newborn boy could expect to hit about 67, while a baby girl would probably reach 73, on average.

Last year, researchers at University College London's Institute of Healthy Ageing were looking through their microscopes when they saw something amazing.