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Several studies out this week show mixed results for testosterone replacement. It appears to protect bone density and strength and prevent anemia, but there is no effect on memory and cognition.

Low levels of iron in the blood may indicate a serious but treatable medical condition if caught early, but patients in a testosterone trial were not informed, a bioethicist finds.

President Trump on Monday named Army Lt. Gen. H.R. McMaster as his new national security adviser

The researchers found that ISIS took in approximately 50 percent less income last year than in 2014. That's because its financial fortunes are linked to the amount of territory it controls.

Are former detainees still a threat or just desperate to rebuild their lives? In partnership with PBS's Frontline, Arun Rath traveled to Serbia to find out why it's so difficult to relocate the men.

Homeland Security Secretary John Kelly on Tuesday unveiled new rules aimed at tougher enforcement of immigration laws, a major policy shift that could put millions of people in the U.S. illegally at risk of deportation.

As a budding rock singer in the '90s, Hart battled crippling addiction. Today, she's healthy — and shares how artists can survive in an industry that can be dismissive of mental illness.

A warmer climate is melting an ice road on Lake Superior that usually forms in the winter. But increasingly, the ferry connecting an island on the lake with the mainland must run year-round.

Widely considered the national dish, no one knows quite where it came from. But you can find this flavorful carb-packed treat anywhere from mama's kitchen to food carts and elaborate eateries.

The quarterback for the New England Patriots says someone stole his jersey after the team's Super Bowl win. Investigators in Houston are working to determine who was in the locker room at the time.