Worst Things to Say To Someone Trying to Lose Weight

5 “Have you tried the Blood Type, Dukan, Forking diet?”

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This suggestion often comes from friends who don’t really know how unhealthy yo-yo dieting can be for you long term, says Largeman-Roth.

Best response: “No, those fad diets don’t work. I’m on a healthy plan that allows me to stay healthy and still lose weight,” suggests Largeman-Roth.