Neither offers any nutrients, dietitians say, so which you drink becomes a matter of personal taste. “There’s no such thing as better,” says Stephanie De Maio, a registered dietitian at St. Michael’s Hospital.

Either one should be drunk in moderation, that is, infrequently, she says. Some people like sweet taste or regular coke, which has 160 calories, and some people like the taste of Diet Coke, which has none.

Why diet drinks may make you eat more