Harvard Health Letter

Vitamins: Benefit of the doubt vs. doubts about benefit

Negative studies have piled up, but are they a fair test?

Good news about vitamins is hard to find these days. Headline after headline — including a few in this newsletter — blare negative results. B vitamins don't prevent heart attacks. Vitamin E doesn't benefit people with Alzheimer's disease. Vitamins A, C, and E — no cancer protection there.

To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »