Mediterranean Diet Fails to Outperform WeightWatchers for Weight Loss but Boosts Diet Quality

A large clinical trial found that a Mediterranean-style diet program produced virtually identical weight loss to WeightWatchers over two years, but significantly improved participants' overall diet quality. The DELISH trial, published in JAMA Network Open, followed primary care patients with obesity and found the Mediterranean group lost 3.4% of body weight compared to 3.5% in the control group—a statistically insignificant difference that missed the study's primary...