What are Nutrients? What are the nutrients in food? What are their main physiological functions?

Nutrients refer to the foods that can provide energy to the human body, the body's constituent parts, tissue repair and physiological regulatory functions.

The chemical composition of the version, all the substances that can maintain the right to human health and provide growth, development and labor are called nutrients, and the nutrients necessary for the human body are protein, fat, carbohydrates (sugars), inorganic salts (minerals), vitamins, water and fiber and other 7 categories.

Functions and roles of nutrients in the body:

Nutrients are the foundation of health.

The material basis of Kang.

1. Provide living and labor.

The energy required for the function of the cells of the arteries and tissues.

2. To provide the building materials of the human body for the construction and repair of body tissues.

3. Provide regulatory substances to regulate the physiological functions of the body.

How many essential nutrients are there?

Why are they called essential nutrients:

1. The substance is necessary for growth, health and survival.

2. The lack or improper proportion of the substance in food can cause specific deficiency disease and finally death.

3. Lack of growth or deficiency caused by deficiency can only be prevented by the nutrient or its precursors.

4. It cannot be synthesized in the body, but it is needed for some important functions in life.

There are 42 essential nutrients:

Mainly include: proteins, fats, carbohydrates, minerals, vitamins, water.

Macronutrients: proteins, fats, carbohydrates.

Micronutrients: minerals, vitamins.

Among them, 7 minerals are abundant in the human body, called macroelements, including calcium, magnesium, potassium, sodium, phosphorus, sulfur and chlorine;

There are 8 kinds of trace elements, which are called trace elements, including iron, iodine, zinc, selenium, copper, chromium, molybdenum, cobalt, and 14 kinds of vitamins

Vitamins A, D, E, K, B1, B2, B6, niacin, pantothenic acid, folic acid, vitamin B12, biotin, choline, vitamin C

Protein 9 amino acids:

Valine, isoleucine, leucine, phenylalanine, threonine, lysine, histidine, tryptophan, methionine.

There are 2 polyunsaturated fatty acids in fats: linoleic acid and linolenic acid.

1 carbohydrate (sugar).

Protein: It is the basis of life, and it is the material for the body to grow, compose and repair human tissues;

Fat: Yes back.

Calories are the main **; Answer.

Sugar: provides a lot of caloric energy;

Vitamins: are indispensable organic compounds for the human body, are indispensable elements for maintaining life, and participate in various metabolic processes;

Inorganic salts: they are the constituent elements of the human body, the constituent components of cells and tissues, maintain the acid-base balance of the human body, and maintain and regulate the functions of the human body;

Water: It is a solvent for nutrition and metabolism.

Introduction: Some nutrients in food usually include carbohydrates, some proteins as well as fats and some trace elements and water. Therefore, the nutrients in the food can be provided to the body, which makes the body healthier at this time.

Let's take a look at some of the nutrients in food.

First of all, we will find that there will be some carbohydrates in the food, among which, when the carbohydrates are digested in the body, they will be broken down into glucose, and other simple sugars, which are better for people's blood sugar at this time, so that people's blood sugar levels become more stable, and can also help the body provide some calories. So some carbohydrates will have starch in them, and some cellulose, they will be composed of some large molecules, so they have the effect of raising blood sugar, but it is relatively slow, for some people with high blood sugar, you can eat some carbohydrates.

Another is protein, because protein is good for health, when protein is absorbed by the human body, after entering people's digestive system, it will be broken down into a polypeptide, and an amino acid. It's great for people to grow and develop, as well as to help people organize and repair these functions. Therefore, there will be 9 essential amino acids in the human body, and at this time, when people have these, they can become healthier.

Moreover, the amino acids in eggs are composed of the best ratio, so the protein in some dairy or some animal foods is relatively high. The other is fat, which is what we call some fatty acids, and some glycerol. Many people will think that they are more fat friends, and at this time, they mainly lose some fat in the stomach, but fat is also some nutrients that people need for growth, so they must also consume some fat, so that the body will be healthier.

There are mainly fats, proteins, minerals, water, vitamins, dietary fiber, and carbohydrates, which are all nutrients in food.

Vitamins, proteins, oils, inorganic salts, carotene, calcium, iron, phosphorus. These nutrients are very important.

It mainly includes calcium, iron, zinc, selenium, vitamins, and some dietary fiber supplements.

Answer: A

A [Analysis] The function of nutrition Hu Chongsu mainly refers to three functions: providing energy, promoting growth and tissue repair, and regulating physiological functions.

Introduction: In life, we will eat a variety of delicacies, especially in some daily foods, which will bring some nutrients to the human body. Do you know what are the main types of nutrients in daily food? Let's find out.

Some of the foods we usually eat will include a lot of nutrients, at this time there will be some carbohydrates, some fats, proteins and vitamins and inorganic salts, as well as water and dietary fiber, because these nutrients are necessary for the human body, and can provide people with a lot of energy to make people's bodies healthier. We need to know that protein is an important part of the human body, and people have enough protein to have good body and immunity. In particular, our blood, as well as our muscles and hair are made up of protein, so protein is an important nutrient for us.

Among the carbohydrates, there will be some sugars in it, which bring some calories to the human body, and many people will become more powerful through these. Fat provides calories to the body, but it has twice as many calories as carbohydrates and proteins. Vitamin is an essential compound in the human body, because of it, our body will not lack some vitamins, so that the body's regulation will not be disordered.

Minerals are also some trace elements, at this time when the human body content is relatively low, this time needs to be supplemented.

Moreover, water is a necessary condition for people in life, and it can metabolize any substance, so that the body has a good operation and operation at this time. And dietary fiber is also very good, it is a polysaccharide for the human body, and it can help people better digestion and absorption, although it can not produce some energy, but can help more substances to be absorbed in the body, at this time we must need these trace elements and essential vitamins.

Nutrients in food are essential nutrients for the human body, including: proteins, sugars (carbohydrates), fats, vitamins, water, inorganic salts (minerals) and dietary fiber.

The six major nutrients, including carbohydrates, fats, proteins, water, vitamins, and inorganic salts, are essential nutrients to maintain the body's vital activities.

Among them, carbohydrates, fats, and proteins are metabolized in the human body to produce energy, provide heat for the human body, and participate in the composition of human cell components, which are called energy-producing nutrients.

What is Nutrition?

Nutrition is the whole process of ingesting food from the outside world, digesting, absorbing and metabolizing, and using the substances needed by the body in the food to maintain life activities.

What are Nutrients?

The substances that exist in food and can be digested, absorbed and utilized by the human body, and are necessary for the normal growth and development of the body and metabolism are called nutrients.

What are the nutrient classifications?

There are 42 essential nutrients for the human body, which are divided into 5 categories, including proteins, lipids, carbohydrates, minerals, and vitamins. What are the functions of nutrients? supply energy and maintain body temperature; Construct and repair body tissues; As a regulating substance, maintain the normal life activities of the body.

What is the best nutrient?

Under normal circumstances, the energy and nutrients that our bodies need are mainly from our daily diet, what do we eat? How to eat? How much to eat?

It varies according to the different physical conditions of each person, but in general, it is necessary to have three regular meals, rich food, of course, to eat in moderation, not too much, and to combine the specific consumption of energy.

Eating is a science, and you must not be too casual or eat seabed, because most of the sub-health of modern people has an important relationship with eating.