Add Yahoo as a preferred source to see more of our stories on Google. Doctors say that unintentional weight loss of more than 5% of body weight within six to 12 months is concerning. (Getty Images) ...

Share on Pinterest A new study reports young adults who smoke could face more than double the risk of having an unexplained stroke. Catherine Falls Commercial/Getty Images Researchers report that ...

If you’ve ever noticed a sudden drop in weight after an illness, you’ve experienced unintentional weight loss fluctuation. But if you can’t point to something that may have caused the change on the ...

A common practice of prescribing anticoagulants to people who have had unexplained strokes should stop, according to a study led by researchers at Columbia, Weill Cornell Medicine, and the University ...

No one can say for certain what UFOs actually are, but a former director of the CIA said some of the recently unexplained phenomenon "might ... constitute a different form of life." Speaking on a ...

Jennifer Lawrence says she lost out on Tarantino role because she wasn’t pretty enough Scientists think a hidden source of clean energy could power Earth for 170,000 years — and they've figured out ...