The Mediterranean diet has been linked to increased longevity and a decreased risk of chronic illnesses, the report said.
Judges voted on 41 diets and ranked them in nine categories, including Best for Weight Loss and Easiest to Follow. Last year's ranking showed the Mediterranean diet tied with the Dietary Approaches to Stop Hypertension diet (also known as DASH), the government-backed plan that emphasizes foods low in sodium but rich in potassium, magnesium and calcium - all of which help lower blood pressure.
"The top diets promote eating the foods that we've been told to eat, like whole grains, fruits and veggies, and going easy on sugar and saturated fat", she added.More news: Oil rises towards $57 on China-U.S. trade talks, OPEC cuts
Third for quick weight loss was the keto diet - very low-carb, high-fat.
For many, the start of the new year signals the start of a new diet.
The Mediterranean diet is an eating pattern that emulates how people in the Mediterranean region have traditionally eaten, with a focus on foods like olive oil, fish and vegetables. Eating a diet that's mostly vegetarian while also allowing for an occasional burger or steak to satisfy a craving can help with weight management and improve overall health, Blatner says.
The Weight Watchers diet tied for fourth place with the MIND diet.More news: UN Security Council meets on Congo election
The flexitarian diet encourages people to try alternative meat options, like tofu, but leaves room for flexibility if you can't quite fully give up meat.
The WW Freestyle program was launched in 2017 and builds off the company's signature SmartPoints system, which assigns every food and beverage a point value, based on its nutrition.
The Mediterranean diet came out on top.
A number of popular diets, including the keto diet, Dukan diet, and the Whole30 diet received some of the lowest rankings on U.S. News' list.More news: Japan's sushi king pays record price for bluefin tuna