The One Thing All Effective Diets Have in Common, According to Science


Adam Gallagher

If you're anything like us, you've dabbled in your fair share of healthy eating strategies—from the Mediterranean diet to veganism to Gisele's method of choice. Some are downright ineffective (and even cruel—ahem, Master Cleanse), while others get the job done. And of course, a lot of it comes down to personal preference and what meshes with your lifestyle.

Still, weight loss is a science, which is why experts render some eating plans far more useful than others. And of the handful of more effective methods out there, it turns out they all have a certain factor in common. During a talk at a research conference in New Orleans earlier this month, Stanford University scientist and professor Christopher Gardner highlighted exactly why some diets work while others don't. The key, it turns out, comes down to eating less calories—which seems obvious, but there's a catch.