Healthiest Diets Ranked: The Best According Experts | Dahlia Marin, RDN, LD, CGN

These are the healthiest diets, according to experts from across the medical, nutrition, and culinary fields.

Dahlia Marin, a certified gastrointestinal nutritionist and registered dietitian, is among the panel of experts to compile the rankings for U.S. News & World Report's Best Diets for 2025. She shares the lengthy process that determined the rankings, and which diets proved to be the healthiest.

Marin also shares insight on why many of the top scoring diets are plant predominant.

Diet's Mentioned

- Plant-Based Diet

- Mediterranean Diet

- Ornish Diet

- Flexitarian Diet

- Pritikin Diet

- Dr. Wiles Anti-Inflammatory Diet

- Low FODMAP Diet

- Gluten-Free Diet

— In this interview —

U.S. News & World Report Diet Rankings: The rigorous process of evaluating 38 different diets based on consumer feedback and expert analysis.

Consumer Insights: The panel considered responses from 3,500 consumers regarding their motivations for dieting, such as weight loss and health improvement.

Top Diets: The Mediterranean Diet is noted as the best overall diet, according to the U.S. News & World Report rankings. Other popular diets include the Ornish Diet and the Flexitarian Diet.

Specific Diets for Conditions: Discussion on diets like the low FODMAP diet for IBS and the gluten-free diet for celiac disease.

Personal Bias: Marin reflects on how she managed her personal biases while evaluating diets that may not align with her own plant-based philosophy.

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