Advanced brain scans found perplexing differences in U.S. diplomats who say they developed concussion-like symptoms after working in Cuba, a finding that only heightens the mystery of what may have...

Scientists are closing in on a long-sought goal — a blood test to screen people for possible signs of Alzheimer's disease and other forms of dementia. On Monday at the Alzheimer's...

A healthy lifestyle can cut your risk of developing Alzheimer's or other forms of dementia even if you have genes that raise your risk for these mind-destroying diseases, a large study has...

Alzheimer's disease may be a risk for older prostate cancer patients given hormone-blocking treatment, a large, U.S. government-funded analysis found. Previous evidence has been mixed on whether...

Not so long ago, people like my Aunt Muriel thought of sunburn as a necessary evil on the way to a “good base tan.” She used to slather on the baby oil while using a large reflector to...

How can you know that any animal, other human beings, or anything that seems conscious, isn’t just faking it? Does it enjoy an internal subjective experience, complete with sensations and...

Maybe it’s a bride standing in a hot chapel, or an exhausted runner after a race. It could be someone watching a medical procedure on television or a donor at a blood drive.  Maybe...

They were the drugs that were supposed to save the U.S. tens of billions of dollars. Called "biosimilars," they are near-copies of complex and expensive biologic drugs to treat cancer, rare...

U.S. women will soon have another drug option designed to boost low sex drive: a shot they can give themselves in the thigh or abdomen that raises sexual interest for several hours. The...

Chips, soda and frozen pizzas tend to be full of salt, sugar and fat, but now scientists are trying to understand if there's something else about such processed foods that might be bad for...