An endless number of diets claim to promote weight loss and improve health. While no single eating plan works for everyone, some diets may work better than others. 1. Mediterranean Diet The Mediterranean diet is frequently ranked as the top diet. Its focus on whole foods while limiting sugars , The best diets for weight loss are safe, sustainable, and healthy. These are the best science-backed diets recommended by nutritionists., “The diet focuses on adding vegetables (especially green leafy vegetables), berries, nuts, whole grains, lean protein, beans, legumes, and limits red meat and cheese and allows for rare occasions of fried foods, pastries, sweets, and processed foods,” Castro says., Traditional weight-loss diets often overlook the importance of sustainable behavior change. However, Noom Weight, a digital weight-loss program used by over three million people, takes a different , For 2025, U.S. News also added 13 newly evaluated diets that had not previously been included, such as the acid reflux diet, the autoimmune protocol (AIP) diet, the alkaline diet, the Body Reset diet, the BRAT diet, the Cleveland Clinic diet, the Gut and Psychology Syndrome (GAPS) diet, a gluten-free diet, the gout diet, the low FODMAP diet, the low-residue diet and Whole30., Best Diets 2025. Our panelists have evaluated and rated 38 diets. Our well-researched diet profiles include meal plans, science-backed pros and cons and tips to help you succeed. We all know that .