Nutrients are substances that are beneficial to human growth and health. We usually refer to the nutrients in food, such as protein, vitamins, calcium, iron and so on.
There are thousands of chemicals in food in Qian Qian, but not all of them are nutrients. Nutrients usually have several characteristics:
1. It is an important part of human growth and development. For example, a particularly obvious example is that after a pregnant woman is pregnant, an invisible fertilized egg is bred into a newborn weighing about 3.2kg; The rapid growth of children's height and the rapid development of adolescent skeleton and reproductive organs.
2. It is an important part of human physiological function. Such as muscle contraction, oxygen transfer in breathing, etc. Even the thinking ability of the human brain and the fertility of women are related to nutrition.
3. Components necessary for disease resistance.
4. It can be excreted through the body's circulatory metabolism. For example, we eat food every day, and the nutrients in food can be excreted through urine, feces, sweat, saliva and menstruation.
So we need food every day, and we need the nutrition in food more.
What are the six nutrients?
Protein: It is the most important nutrient in human tissues and the main transporter of substances in the body.
Sugar is the main source of heat energy in human daily life.
Lipid: The so-called oil, like sugar, is one of the main sources of human heat energy. We divide lipids into two categories: animal lipids and plant lipids. Generally speaking, vegetable lipids are better for human body.
Minerals: it contains many substances, the most important of which are calcium, which is an element that constitutes bones and teeth, and is also the main substance that regulates heartbeat and muscle contraction; Phosphorus: it is also one of the main substances that constitute bones and teeth; Iron: It is one of the main components of heme.
Six nutrients-1
It is also a component of some enzymes in the body. In addition, there are many other minerals, which have an important impact on the physiological function of the human body and cannot be ignored.
Vitamins: water-soluble and fat-soluble.
Water is the best lubricant and solvent in the body. Many substances in the body must be dissolved in water to react, so it is also one of the indispensable nutrients for the human body.
Six nutrients -2
Protein:
Supply energy.
Regulate physiological functions.
The main materials for maintaining human growth, forming and repairing cells and tissues.
Sugar:
Supply energy.
Help the metabolism of lipids in the body.
Form substances in the human body.
Regulate physiological functions.
Functions of Six Nutrients
Lipids:
Supply heat energy.
Form subcutaneous fat and keep body temperature constant.
Assist the absorption and utilization of fat-soluble vitamins.
Protect internal organs.
Minerals:
The main raw material of organic matter that constitutes body cells.
Regulate physiological functions.
Functions of Six Nutrients -2
Vitamins:
Promote metabolism.
Regulate physiological functions.
Water:
Promote the digestion and absorption of food.
Regulate body temperature.
Maintain normal circulation and excretion.
Help maintain the balance of electrolytes in the body.
Moisturize the surface of each tissue and reduce the friction between organs.