Nutrition is the science that studies the interactions between living organisms and the substances they consume for sustenance. It encompasses a variety of processes, including ingestion, digestion, absorption, and metabolism, which are essential for maintaining health and well-being. Proper nutrition is vital for growth, development, and overall health. It involves a balanced intake of macronutrients like carbohydrates, proteins, and fats, as well as micronutrients such as vitamins and minerals. Understanding nutrition helps individuals make informed dietary choices that can prevent diseases and promote a healthier lifestyle.