Human Nutrition and Biochemistry is the scientific study of how the body utilizes nutrients from food to sustain life, support growth, and maintain health. It focuses on the digestion, absorption, metabolism, and biochemical functions of carbohydrates, proteins, fats, vitamins, and minerals. This field bridges the gap between nutrition science and molecular biology by explaining how nutrients influence cellular processes and energy production. Understanding human nutrition and biochemistry is essential for addressing nutritional deficiencies, preventing lifestyle diseases, and promoting overall well-being through balanced dietary practices.