Do vitamin D supplements reduce risk of early death?

Ask the doctor

Published: December, 2019

Q. I've been taking vitamin D supplements for several years because my doctor said they might help me live longer. Am I wasting my money, or even causing myself harm?

A. You're right to be skeptical. Vitamin supplements of all types repeatedly have been tested for theoretical health benefits, and often the studies have shown none. There's no doubt that vitamin D supplements can help prevent or treat osteoporosis. Theoretically, they might reduce the risk of various diseases. What about the question you asked: whether vitamin D supplements help you live longer?

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 »