Calcium supplements and heart attack

Published: November, 2010

Opposing studies sound a note of caution on too much calcium.

Your body needs calcium to build bones, contract muscles, send nerve signals, help enzymes and genes do their jobs, and much more — including making your heart beat. How much calcium you need to take in each day to fulfill these tasks, and in what form, are two controversial questions.

To continue reading this article, you must log in.
  • 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

New subscriptions to Harvard Health Online are temporarily unavailable. Click the button below to learn about our other subscription offers.

Learn More »