KEY POINTS
- A substance needed by the body for growth, energy, repair and maintenance is called Nutrient.
- The mode of obtaining food for growth, energy, repair and maintenance is called Nutrition.
- There are two types of nutrition, first is Autotrophic Nutrition and the other is Heterotrophic Nutrition.
- The diet which contains right amount of nutrients is called Balanced diet.
- Balanced diet should have 1/5 proteins, 1/5 fats and 3/5 carbohydrates.
- Carbohydrates, proteins, fats, minerals, vitamins, water and roughage are seven essential components of diet.
- Vitamins and minerals are called micro-nutrients or productive principles of food.
- Protein is the most essential for body growth and repair of tissues.
- When the food is directly given in the veins, it is called parenteral nutrition.
- When the food is given in the stomach or intestine directly then it is called enteral nutrition.