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www.reference.com/article/many-calories-gram-carbohydrate-6dee552574afa3b7

One gram of carbohydrates contains 4 calories. One gram of protein contains 4 calories, and one gram of fat contains 9 calories. The U.S. Department of Agriculture recommends that between 45 and 65 percent of total daily calories come from carbohydrates.

www.reference.com/article/many-calories-per-gram-protein-6fafab1c6bb08913

One gram of protein has 4 calories. The USDA recommends that 10 to 35 percent of a person's calories should come from protein. The body uses protein for growth and repair of tissue, production of hormones and enzymes, immune system functions, protection of muscle mass a...

www.reference.com/article/many-calories-per-gram-fat-dd2aa38d89ade372

One gram of fat contains 9 calories. There are 4 calories per gram of carbohydrates and 4 calories per gram of protein. Fat, carbohydrates, and protein are called macro nutrients.

www.reference.com/article/many-calories-per-gram-vitamins-e53d501f5357dea2

Vitamins do not have any calorie content. Only fat, protein and carbohydrates provide calories. Vitamins are chemicals the body needs in small amounts to support important biochemical reactions.

www.reference.com/article/many-calories-per-gram-fiber-97a22825f5d137dc

One gram of soluble fiber contains about four calories, but insoluble fiber has no calories. Fiber is the part of food that is not broken down during digestion.

www.reference.com/article/many-calories-gram-sugar-d16395f7572ee5fd

One gram of sugar contains 3.87 calories. While some sugars are good for you, most lead to overeating, which in turn can cause weight gain. Knowing how many calories are in a gram of sugar can help a person better understand information provided on nutrition labels and ...

www.reference.com/article/many-calories-gram-protein-b6039c586d76d866

There are 4 calories in a gram of protein. Calories are measured as the potential amount of energy that a type of food provides the body. The USDA recommends that 10 to 35 percent of daily caloric intake should come from proteins.