4: Weight Watchers diet

After making some changes to its program, Weight Watchers has risen through the US News & World Report's rankings over the past two years.

Weight Watchers still uses its signature points system, and in December 2017, the organization introduced its new "Freestyle" program, and deemed eggs a zero-point food, along with whole beans, peas, and almost 50 kinds of fish.

"Very few people come to Weight Watchers because they've had a problem overdoing it on salmon, legumes, beans, and chicken," Gary Foster, Weight Watchers' chief scientific officer, previously told Business Insider. "Someone might think 'OK I'm eating salmon, no sweat on that. If I'm eating chocolate cake, I know I still have to measure that.'"

The Weight Watchers diet ranked as the best diet for weight loss.

[Photo via @weightwatchers]

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