Basics of Human Nutrition

 

Basics of Human Nutrition

Human Nutrition is the scientific study of nutrients, the food we eat, and how the body uses them for growth, energy, repair, and protection. Understanding the basics of nutrition helps individuals make healthy food choices and prevent nutrition-related diseases.

What Are Nutrients?

Nutrients are chemical substances present in food that are essential for life and health. They are required for proper functioning of the body.

Classification of Nutrients

Nutrients are broadly classified into:

  • Macronutrients: Carbohydrates, Proteins, and Fats (required in large amounts)

  • Micronutrients: Vitamins and Minerals (required in small amounts)

  • Water: Essential for all metabolic activities

  • Dietary Fiber: Important for digestion and gut health

Functions of Nutrition

  • Provides energy for daily activities

  • Helps in growth and development

  • Repairs worn-out tissues

  • Regulates body processes

  • Protects against diseases and deficiencies

Concept of Balanced Diet

A balanced diet is one that supplies all essential nutrients in correct proportions according to age, sex, occupation, and physiological condition. It includes cereals, pulses, vegetables, fruits, milk, fats, and adequate water.

Recommended Dietary Allowance (RDA)

RDA refers to the average daily intake of nutrients sufficient to meet the needs of healthy individuals. It varies based on age, gender, and life stage.

Understanding the basics of human nutrition is the first step toward building lifelong healthy eating habits and improving overall quality of life.


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