Intermittent Fasting: A Primer

by: John Berardi, PhD and Brian St. Pierre, MS, RD

Nutrition: Does it make sense to take extra-long breaks between meals? The research is intriguing, but inconclusive.

If you haven’t had a client ask about it yet, you will soon. Intermittent fasting has hit the mainstream, and a lot of peo- ple are taking notice.

Proponents claim that intermittent fasting causes more rapid weight loss than other approaches; that it makes dieting easier; and that it improves blood glucose control and blood lipids. Does the current body of evidence support these claims? Let’s find out.

What Is Intermittent Fasting?

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IDEA Fitness Journal, Volume 11, Issue 4

© 2014 by IDEA Health & Fitness Inc. All rights reserved. Reproduction without permission is strictly prohibited.

About the Authors

John Berardi, PhD

John Berardi, PhD IDEA Author/Presenter

As an elite nutrition coach and exercise physiologist, Dr. Berardi has coached hundreds of elite amateur and professional athletes. In fact, in the last two Winter Olympics alone, his athletes have co...

Brian St. Pierre, MS, RD

Brian St. Pierre, MS, RD IDEA Author/Presenter

Brian St. Pierre, MS, RD, is a nutrition expert at Precision Nutrition, the world’s largest online nutrition coaching company. Each year, the Precision Nutrition team takes small groups of trainers ...