Food and nutrition are fundamental aspects of health and well-being.
- Food refers to any substance consumed to provide nutritional support for the body. It contains essential nutrients — carbohydrates, fats, proteins, vitamins, and minerals — needed for energy, growth, and maintaining bodily functions.
- Nutrition is the science that studies the relationship between diet and health. It focuses on how the body uses nutrients from food, how diet affects health and disease, and how to make dietary choices that promote optimal health.
Macronutrients
Nutrients required in larger amounts, providing energy and supporting growth and repair:
- Carbohydrates: the primary source of energy, found in grains, fruits, and vegetables.
- Proteins: important for building and repairing tissue, from meat, dairy, beans, and nuts.
- Fats: necessary for energy, cell function, and protecting organs, from healthy sources like avocado, nuts, seeds, and fish.
Micronutrients
- Vitamins: organic compounds essential for various metabolic processes, including Vitamins A, C, D, E, and K.
- Minerals: inorganic elements like calcium, potassium, and iron that support bone health, nerve function, and oxygen transport.
Dietary Guidelines and Special Needs
Dietary guidelines are recommendations on what to eat and drink to promote health and reduce the risk of major chronic diseases; they are usually tailored to different populations and vary by country. Some individuals have special dietary needs due to health conditions, age, or lifestyle — for example, athletes, pregnant women, and older adults may need tailored dietary plans.
Understanding food and nutrition helps individuals make informed choices about their diet, leading to improved health outcomes and quality of life.
