Calories come from three sources:
Protein: 4 calories per gram
Fat: 9 calories per gram
Carbohydrates (such as sugar): 4 calories per gram
Basically all food is an combination of these.
Ice cream and potato chips are foods that provide calories but very few essential nutrients.
calories give you energy and provide nutrients to help the body
vitamins and minerals
Nutrients that contain calories like proteins, fats, and carbohydrates provide energy when consumed.
Calories provide the body with nutrients and energy for the body to survive.
fats or lipids
Lipids, also known commonly as fats, provide nine calories per gram ingested.
Carbohydrates
Fat
Beer calories are not equivalent to food calories. Beer contains empty calories, meaning they provide little to no nutritional value, while food calories come from a variety of nutrients that are essential for the body's functioning.
protein and carbohydrates produce 4 calories per gram (fat produces 9 calories per gram).
Carbohydrates and proteins provide 4 calories per gram, while fats provide 9 calories per gram. Alcohol provides 7 calories per gram.