Nutrition refers to the process by which organisms obtain and utilize food for growth, maintenance, and energy. It involves the intake, digestion, absorption, transport, and utilization of nutrients by living organisms.
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Macronutrients: Macronutrients are nutrients that are required in large quantities by living organisms. They include carbohydrates, proteins, and fats.
Micronutrients: Micronutrients are essential nutrients that are required in smaller amounts but are still vital for maintaining good health. Examples include vitamins (such as vitamin C or vitamin D) and minerals (such as iron or calcium).
Malnutrition refers to deficiencies or imbalances in nutrient intake that can lead to negative health effects. It can result from inadequate consumption of essential nutrients or excessive intake of unhealthy foods.