Do you know how many calories are in your drink?

Public health experts are calling for nutritional labels that include calories to be put on alcoholic drinks.

In a study of about 2,000 people in England, more than 80 percent did not know the calorie content of a large glass of wine. Almost 60 percent didn't know how many calories were in a beer.

Experts asking for the labels say calorie confusion is the biggest factor in obesity.