Feeding is the taking of food, but not everything we eat or drink is useful. Nutrients are the useful substances in the food we eat .
Nutrition consists of:
Extracting nutrients from the food we eat and oxygen from the air we breathe;
Distributing the nutrients and air around our bodies;
Excreting what we do not need.
WHAT NUTRIENTS DO WE NEED?
The different nutrients contained in food are:
Proteins produce our body tissue and are essential for the functioning of our cells.
Carbohydrates are the most important source of energy; the include starches, which are found in cereals and potatoes, and sugars which are abundant in fruit.
Fats give us energy. Our body stores them very well. There are both animal and vegetable fats.
Minerals control growth and are important for the functioning of the nervous system, the contraction of muscles and the coagulation of blood.
Vitamins control the functioning of many of the organs in our body and help us stay healthy.
Our diet is the quantity and variety of food and water that we take. To maintain our mental and physical health, we must follow a diet that contains all the different nutrients in the correct quantities.
A person’s diet varies according to cultural, religious, and geographical aspects. It also depends on the age, weight and height of each individual.