Nutritional biochemistry is the study of the biochemical processes that occur when nutrients are metabolized in the body. It focuses on how food components such as carbohydrates, proteins, fats, vitamins, and minerals interact at the molecular level to support physiological functions. Understanding nutritional biochemistry is essential for determining how the body processes various nutrients and how these processes affect health, disease prevention, and overall well-being.

Carbohydrates are a primary energy source, and their breakdown begins in the mouth with the enzyme amylase. Upon reaching the small intestine, carbohydrates are further broken down into simple sugars like glucose, which is absorbed into the bloodstream. The glucose is either used immediately for energy or stored in the liver and