Experts say the keto diet isn’t sustainable, so why is it so popular?

(CNN)America remains in the middle of a keto fad. The stylish diet plan– which prohibits carbohydrates to make your body burn fat for fuel– has actually kicked Weight Watchers’ derrire on the stock exchange , caught the recommendation of celebs such as Kourtney Kardashian and Halle Berry , and deluged...
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