Following a Mediterranean diet involves eating lots of plants, whole grains, healthy fats (such as olive oil) and lean proteins, and cutting back on processed foods, red meat and refined sugars. Those who follow this diet can also expect an increase in bone and heart health and a fair amount of healthy weight loss.
The DASH (Dietary Approaches to Stop Hypertension) diet was created to help manage blood pressure, but experts say it has many overall health benefits, helping it nab the number 2 spot on the best overall diets list.
In third place, is something new called the Flexitarian Diet.
For many, the start of the new year signals the start of a new diet.
The ketogenic, or keto, diet, which focuses on high-fat, low carbohydrate eating, jumped 11 spots to tie for the No. 2 ranking for Best Fast Weight Loss, showing the diet works for weight loss but may not be sustainable or healthy, according to Haupt.
In the book, Blatner says you don't have to cut out meat entirely to reap the health benefits of a vegetarian diet.
The eating plan features a wide variety of options, including fruits and vegetables, whole grains, nuts, poultry, and fish. In fact, one study found the diet may reduce the risk of developing Alzheimer's disease by as much as 53 percent.
Weight Watchers ranked in the top five for best diets overall and also obtained the No. 1 rankings for Best Commercial Diet and Best Weight Loss Diet for 2019.
But the diet topping any list isn't necessarily the best diet for you.