The concept of food and nutrition
Food is any substance that a person eats or drinks. It is taken orally, and after digestion, it turns into simple substances. This does not include drugs or narcotics, either natural or artificial. Another definition of food is any substance that provides the body with important nutrients For energy and growth, and food is the basic element on which the existence of human beings, and was one of the main causes of conflict between peoples to maintain their survival.
Nutrition: The way the body gets food, or the process of supplying the body with important nutrients, and causes malnutrition, whether the lack of eating or excessive consumption of the element to the imbalance in the functions of the body, and causes various diseases.
Food Benefits
- Body growth, food helps the body grow and renew its cells.
- Extend the body energy necessary for daily activity, which is necessary for the body to react important, and supply the muscles of the body energy.
- Strengthen the immunity of the body, which helps in the prevention of diseases.
Nutrients
For a healthy and balanced diet, one must eat the food that contains the six nutrients, which the body is unable to provide and is present in food.
- Carbohydrate: Helps the body to create energy, and provide him with the calories necessary to do his work, such as: bread, rice, potatoes and these sources of plant, and can be obtained from animal sources, such as: butter.
- Proteins: They are important in the formation and growth of body tissues, and can be obtained from milk and milk products, meat of all kinds, eggs and legumes such as lentils and chickpeas.
- Vitamins: Examples: Vitamin A, B, C, and D, can be obtained from eating milk, meat, and vegetables.
- Mineral salts include calcium, which is necessary for the formation and construction of bones and teeth, and is found in milk and milk products, and iron, which helps in the formation of blood, and is found in red meat, vegetables and legumes, and also include the mineral salts on the element iodine, as the lack of element of iodine leads to hyperthyroidism, It is rich in food: table salt, fish, and nuts.
- Fat: Another source of energy, eating more leads to an increase in weight; because it accumulates inside the body and thus human reaches the stage of obesity, it can be obtained from vegetable exporters, such as butter, egg yolks, animal, such as: corn, sesame, , And pistachio nuts.
- Water: essential for many functions of organs such as kidneys, and helps to maintain the moisture of the skin and prevent the drought, and is obtained by drinking naturally or eating fresh juices, soups and others.