Harvard Health Letter

What you should know about: Vitamin C

You may hear each winter that vitamin C can fight off the common cold. But is it just hype, or does it really help?

"The findings of a large number of studies on the subject are mixed," says Dr. Bruce Bistrian, chief of clinical nutrition at Beth Israel Deaconess Medical Center and professor of medicine at Harvard Medical School.

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 »