Is there any science behind the policy of screening soldiers' testosterone levels? If not, then what are the reasons for it, ...

The tests aren’t a guarantee that someone will develop dementia, but that hasn’t stopped people from getting them.

Bone-stress injuries affect up to 8% of military recruits across the services and cost the Department of Defense about $100 million per year in medical expenses alone. (Douglas H. Stutz/Navy) A new $3 ...

Immerse yourself in the most compelling and consequential stories from around the globe. The world is changing in big ways every day. State of the World from NPR takes you where the news is happening ...

Your urine offers a daily read on how well your kidneys are handling waste and water.

Prostate cancer screening usually begins with a conversation about risk rather than an automatic test. A PSA blood test can identify if you need evaluation, but it cannot diagnose prostate cancer ...