If you have to choose between bread or butter in your diet, which should you go for? The right answer is the fat, according to a recent study in the Annals of Internal Medicine. A low-carbohydrate diet may actually be better for weight loss than a traditional low-fat diet, and have the added bonus of reducing the risk of heart disease. In the study, 148 obese adults were told either to cut down on saturated fats (meat, whole milk and butter) or high-carb foods (white bread, sugary cereals and other processed foods). The groups didn’t have calorie restrictions, but both reported cutting back by between 500 and 700 calories a day.