U.S. News & World Report's Best Diets of 2014 are in, and coming in last place this year is the popular Paleo Diet.

Experts took issue with the diet on every measure. Regardless of the goal -- weight loss, heart health, or finding a diet that s easy to follow -- most experts concluded that it would be better for dieters to look elsewhere, the editors wrote.

U.S. News' annual diet rankings are determined by a panel of dietary, nutrition, obesity, food psychology, diabetes and heart disease experts. They ranked the diets in seven different categories: how easy it is to follow, its ability to produce short-term and long-term weight loss, its nutritional completeness, its safety and its potential for preventing and managing diabetes and heart disease. They also factored in the experts personal opinions on diets they liked and other things they thought dieters should know about this specific plan.

Diets were graded on a 1 to 5 star scale, with 1 being the lowest score.

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