Wise & Well

Science-backed insights into health, wellness and wisdom, to help you make tomorrow a little better than today.

woman hitting her head with her palm to indicate she’s made a mistake
Image: Kues/Shutterstock. Used under the writer’s license.

Member-only story

Featured

The 7 Worst Diet Mistakes Dietitians See Over and Over

Pitfalls to avoid if you want to feel better, be healthier, lose weight, be stronger or live longer

Robert Roy Britt
Wise & Well
Published in
8 min readMar 10, 2025

--

The diet industry rakes in billions of dollars a year selling diet schemes with catchy names, low-calorie foods and drinks that sound good but are often unhealthy, and dietary supplements that are unregulated and unproven. These things don’t work, says Erin Holley, RD, a registered dietitian who specializes in eating disorders at Ohio State University’s Wexner Medical Center.

“They don’t make money if the program works,” Holley said by email. “They make money with repeat customers.”

These companies, the influencers who promote them, and perhaps also your friends and loved ones, will lean on individual anecdotes to back their claims of the best diet that you should try. But anecdotes are not science. So given the smorgasbord of lousy diet advice out there, I reached out to Holley and three other dietitians and asked them about the worst diet and nutrition mistakes they see people make over and over, so that you can avoid them and simply eat well.

Big mistake №1: Going all or nothing

“Instead of making small, achievable changes, many think that a complete overhaul…

--

--

Wise & Well
Wise & Well

Published in Wise & Well

Science-backed insights into health, wellness and wisdom, to help you make tomorrow a little better than today.

Robert Roy Britt
Robert Roy Britt

Written by Robert Roy Britt

Editor of Wise & Well on Medium + the Writer's Guide at writersguide.substack.com. Author of Make Sleep Your Superpower: amazon.com/dp/B0BJBYFQCB

Responses (43)