Reflecting this, MSG is labeled “generally recognized as safe” (GRAS) by the FDA. Yes, “you can experience side effects like headache if you consume too much MSG, but this seems to be rare,” Dr. Alan ...

Learn how caffeine affects brain chemicals and health, sleep, and mood. Understand safe daily limits, hidden sources, and signs you’re getting too much.

Tourette’s syndrome, a neurological condition that causes involuntary sounds or movements known as tics, has come under the spotlight after a man with the condition shouted a racial slur during the ...