counting calories to lose weight is often misleading and that trying to lose weight by exercise alone is futile. However, until we come up with a better system, calories are here to stay, and they give us at least a rough guide to the overall energy content of foods. The rest of the details on food labels show us the other macronutrient components of food that the industry and the government have agreed we can see. They were introduced so we could judge for ourselves which products are healthy and which we should be wary of. But

