Kaitlin Sullivan is a health and science journalist based in Colorado. She's been part of multiple award-winning investigations into health topics including the international medical device industry ...

When we think about getting older, we usually worry about gray hair or memory slips. But your true biological age isn't written on your face. It's actually hidden in how easily you can get up from ...

Forget tracking steps or buying expensive gym memberships to figure out how well your body is handling the passing years. The most telling test of your physical age doesn't require any equipment at ...