Many of the packaged foods you’ll find at the grocery store contain empty calories. This means they have little nutritional value. Instead, they give your body mostly solid fats and added sugars ...

Calories are a unit of energy, but in diet and exercise, the term is used to mean kilocalories (kcal). Learn the difference and what these terms mean.

Empty calories come from foods that have little to no nutritional value. They include cakes, candies, soft drinks, solid fats, and more.

Calorie density, or energy density, refers to the number of calories per weight or volume of food. Compare, for example, 100 g of romaine lettuce, which contains about 17 calories, with the same ...

Hidden calories in food and drink could cause you to gain weight without meaning to. Common sources include cooking oils and salad dressings.

Research shows that 1,200 to 1,500 daily calories for women and 1,500 to 1,800 daily calories for men is a suitable and healthy amount for sustainable weight loss. However, these numbers are not a ...

You can think of burning calories as “Step 1 of being alive,” said Herman Pontzer, a professor of evolutionary anthropology at Duke University. Food gives your body the fuel it needs to stay ...