1. Definition: Nutrition is the science that studies the relationship between food and the health and well-being of individuals. It encompasses the processes of ingestion, digestion, absorption, metabolism, and excretion of nutrients from food.
  2. Scope: It involves understanding the role of nutrients in supporting growth, development, and maintenance of the human body, as well as preventing and managing diseases through dietary interventions.
  3. Types of Nutrients:
    • Macronutrients: Nutrients required in large amounts for energy production and bodily functions, including carbohydrates, proteins, and fats.
    • Micronutrients: Nutrients needed in smaller amounts for various physiological processes, including vitamins and minerals.
    • Water: Essential for hydration, temperature regulation, nutrient transport, and waste elimination.
  4. Functions of Nutrients:
    • Carbohydrates: Provide energy for cellular activities and brain function, as well as fiber for digestive health.
    • Proteins: Serve as building blocks for tissues, muscles, enzymes, hormones, and immune factors.
    • Fats: Supply energy, support cell structure, and assist in the absorption of fat-soluble vitamins.
    • Vitamins: Act as coenzymes and antioxidants, regulating metabolic processes and protecting against oxidative damage.
    • Minerals: Essential for bone health, muscle function, nerve transmission, and fluid balance.
  5. Nutritional Requirements:
    • Energy Requirements: Determined by factors such as age, sex, weight, height, physical activity level, and metabolic rate.
    • Macronutrient Ratios: Recommendations vary but typically include a balance of carbohydrates, proteins, and fats in the diet.
    • Micronutrient Intake: Guidelines specify recommended daily allowances (RDAs) or dietary reference intakes (DRIs) for vitamins and minerals.
    • Water Intake: Adequate hydration is crucial for maintaining fluid balance, regulating body temperature, and supporting physiological functions.

Course

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Dr Arnab Chatterjee

Assistant Professor (M.Sc., Ph.D.)

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Ms Pallavi Majumder

Assistant Professor (M.Sc.)

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Smt. Kamalika Chatterjee

SACT-II (M.Sc.)