Your brain on chocolate

An array of chocolate candies, including milk, dark, and white.

Did you know that places where chocolate consumption is highest have the most Nobel Prize recipients? It’s true, at least according to a 2012 study published in the New England Journal of Medicine. Of course, that could be a coincidence. But is it possible that intelligence or other measures of high brain function are actually […]

Many adults don’t get the amount of vitamin D they should

Shot from behind of young blond woman outside on a hill getting vitamin D from the sun.

DEAR MAYO CLINIC: I have heard different recommendations from different sources regarding vitamin D. One doctor told my husband that everyone living in the Northern Hemisphere should take a vitamin D supplement every day, even in the summer. What do you recommend? ANSWER: Understanding how much vitamin D you need can be confusing because there […]

For people with multiple sclerosis, can exercise change the brain?

Can exercise change the brain of those with multiple sclerosis? Drawn image of brain "sweating" while it holds up barbell.

Multiple sclerosis (MS) is a condition of unknown cause in which the covering lining of nerve fibers (called myelin) is damaged. Myelin is like insulation on a wire — when it is damaged, nerve impulses are not transmitted properly. This leads to an array of symptoms including weakness, vision problems, numbness, tingling and poor coordination […]

New shingles vaccine offers more protection

Shot from above of singles vaccine

The Medicine Cabinet: Ask the Harvard Experts   Q: I recently read that the new shingles vaccine might be better than the older vaccine. I did have one shot of the older vaccine about seven years ago. Should I get this new one? A: Shingles is caused by the same virus — the varicella zoster […]