best superfoods

Photo: Adam Levey

3 of 5
Best Waist Whittler
Blueberries vs Raspberries
Winner: Raspberries

While blueberries are prized for their high antioxidant content and can help protect against cognitive decline and cardiovascular disease, when it comes to weight loss, bet on red. "With 31 percent fewer calories, about one-third the sugar, and 46 percent fewer carbs than blueberries, raspberries are the smarter choice," says New York–based nutritionist Sharon Richter. Per cup, raspberries also contain 8 grams of fiber compared with just 3.6 in blues. Fiber slows digestion to help keep you from overeating.