intermittent fasting, backed by science
Dr Krista Varady, PhD, is a leading scientist in the field of nutrition, best known for her pioneering work on intermittent fasting. As a professor of nutrition at the University of Illinois Chicago, she has spent over two decades studying how simple changes in when we eat—not just what we eat—can have powerful effects on body weight, metabolism, and overall health.
Meet Dr Krista
Hi, my I’m Dr Krista Varady, and I started studying intermittent fasting because I wanted to find a weight-loss approach that people could realistically stick with. Traditional diets often require people to count calories every day, and I saw how difficult that could be to maintain. I was curious whether eating less on certain days instead of every day could produce similar—or even better—health benefits. That question led me to spend more than 20 years researching intermittent fasting and how it affects body weight, metabolism, and overall health.
As Seen on
Dr. Krista has become one of the most recognized voices in intermittent fasting, with her groundbreaking research featured by media outlets around the world.
THE EVERY OTHER DAY DIET
The Every Other Day Diet offers a research-backed approach to losing weight without giving up the foods you love. Based on Dr. Krista Varady’s pioneering research in alternate-day fasting, the book shows how eating just 500 calories every other day can help you lose weight, improve your health, and achieve lasting results—without the deprivation of traditional diets.
THE fastest DIET
Dr Krista Varady teams up with the world's largest online fasting network, SuperFastDiet, to show you how to supercharge your weight loss and dramatically improve your health. The book contains 60 delicious recipes and clear-eyed advice on how to make this remarkable diet part of your everyday life. Fun, informative and effective, this is the go-to diet for fast and sustainable weight loss and a pathway to glowing good health.
Get to know me!
In this video, I share how I became a fasting scientist, how I started studying alternate-day fasting (ADF) and time-restricted eating (TRE), my research training and work at the University of Illinois Chicago, and why I created this channel to give you clear, science-backed answers about intermittent fasting, weight loss, and health.
Is Breakfast Skipping bad for you?
Does breakfast skipping really cause weight gain, slow your metabolism, or raise your risk of heart disease? In this video, I break down what the science actually says about breakfast, using evidence from randomized controlled trials and observational studies.
Is intermittent fasting dangerous for women?
Does intermittent fasting mess up female hormones or your menstrual cycle? In this video, I break down what the human research actually says about intermittent fasting, female hormones, menstrual cycles, PCOS, and weight loss.
Does fasting really boost ketosis?
Does intermittent fasting really work by boosting ketosis and burning fat, or have you been misled by popular fasting claims?
Free beginners guide to intermittent fasting
Want to try intermittent fasting but don't know where to start? I'd love to share my FREE Beginner's Guide to Intermittent Fasting with you. It’s packed with helpful tips to get started!