Go Ad-Free
logoThe People's Perspective on Medicine

Show 1126: Can You Find Your Best Diet?

Scientists tested low-carb vs low-fat and tried to find markers that would show which one is best for who. Your best diet is the healthiest one you can follow indefinitely.
Current time

Can You Find Your Best Diet?

0% played% buffered

People get excited about their favorite diets. Maybe you do, too. Are you a low-carb champion or a low-fat fan? Which one really is your best diet?


A big study from the Stanford Prevention Research Center assigned 600 people to either a healthy low-fat diet or a healthy low-carb diet. (No junk food allowed in either one.) People followed their assigned diets for a year and then the scientists compared the amount of weight lost by each group. Average weight loss was astonishingly close. Altogether, people in the study lost a total of 6500 pounds.

That might have been expected, since previous studies have shown a wide range of weight loss results within each type of diet plan and not much difference between them. The DIETFITS study (standing for Diet Intervention Examining The Factors Interacting with Treatment Success) planned to see if they could figure out which is the best diet for specific individuals. They looked at a metabolic marker, insulin secretion, and at a set of three genes that have previously been linked to weight. However, neither of these markers predicted who would do better on a low-fat regime and who would thrive on a low-carb approach.

More Work to Do:

Consequently, scientists have a lot more work to do before they can identify your best diet. But they did discover that emotional and psychological factors are important. People who were very successful at losing weight told the researchers that the study helped them change their relationship to food. Many found that becoming more mindful about their meals made a big difference.

Find out more about the study and what we know about healthy eating.

This Week’s Guest:

Christopher Gardner, PhD, holds the Rehnborg Farquhar endowed chair of medicine at Stanford University and is director of nutrition studies at the Stanford Prevention Research Center. The DIETFITS study he led was published in JAMA on February 20, 2018.

Listen to the Podcast:

The podcast of this program will be available the Monday after the broadcast date. The show can be streamed online from this site and podcasts can be downloaded for free. CDs may be purchased at any time after broadcast for $9.99.

Buy the CD or use the dropdown menu to download the MP3.

Rate this article
4.7- 18 ratings
About the Author
Terry Graedon, PhD, is a medical anthropologist and co-host of The People’s Pharmacy radio show, co-author of The People’s Pharmacy syndicated newspaper columns and numerous books, and co-founder of The People’s Pharmacy website. Terry taught in the Duke University School of Nursing and was an adjunct assistant professor in the Department of Anthropology. She is a Fellow of the Society of Applied Anthropology. Terry is one of the country's leading authorities on the science behind folk remedies..
Tired of the ads on our website?

Now you can browse our website completely ad-free for just $5 / month. Stay up to date on breaking health news and support our work without the distraction of advertisements.

Browse our website ad-free
Join over 150,000 Subscribers at The People's Pharmacy

We're empowering you to make wise decisions about your own health, by providing you with essential health information about both medical and alternative treatment options.