Not all sugars are created equal.
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Dr. Hensrud says added sugars account for a big portion of calories in most people's diets and are one of the main causes of weight gain.
But there are sweet treats that don't have any added sugars: fruit.
"It gets a reputation of being high in sugar, but a small piece of fruit is only about 60 calories," he says. "There's a lot of water. There's other nutrients. There's fiber. So there [are] many other beneficial things in fruit."
Not only will sugar from fruit not cause you to gain weight, it likely does the opposite.
"Studies have shown when people increase their fruit and vegetable intake, their overall risk of gaining weight decreases because they're not eating something else that's higher in calories," Dr. Hensrud says.
So having a sweet tooth doesn't have to be a bad thing. Just make sure you're picking the right sweets with the right kind of sugars.