Briefly describe the relationship between nutrition and health.

Contents and standards of health Health requires balanced nutrition, adequate sleep, proper exercise and healthy psychology. Energetic, able to cope with the pressure of daily life without feeling too nervous, you can do anything you desire; Optimistic and positive, willing to take responsibility, be strict with yourself and be lenient with others; Strong adaptability to various changes in the environment; Resist the common cold and infectious diseases; Weight standard: when the body stands symmetrically, all parts of the body are coordinated; Bright eyes, quick reaction and no inflammation; Hair shiny, no dandruff or less; Clean teeth, no dental caries, no toothache, normal gum color and no bleeding; Muscle and skin are elastic, and walking feels easy; Be good at rest and sleep well. Basic concept of nutrition: Nutrition refers to the process that human body absorbs and uses food or nutrients, and it is also a biological process that human beings meet their physiological needs by ingesting food. Reasonable nutrition: refers to providing enough heat energy and various nutrients for the body through reasonable diet and scientific cooking, and maintaining the balance between nutrients to meet the normal physiological needs of the human body and safeguard human health. Nutrients: In order to maintain normal physiological functions and meet the needs of normal growth and development, metabolism, work and labor, human beings should consume necessary nutrients from food every day. The nutrients in these diets are called nutrients. It mainly includes protein, vitamins, minerals, lipids, sugars, water and cellulose. Nutrition and health: food is the most important thing for people. In the whole life process, nutrition is the basic substance to maintain life, providing the energy needed by cells and realizing the coordinated action of various tissues and organs. A person's life is like a small tree, which needs constant watering, fertilization and soil cultivation to thrive. We can think about the importance of nutrition to people's lives. In the process of nutritional supplement, we need balanced nutrition to prevent the imbalance of yin and yang in the body and lead to the invasion of diseases. We should supplement nutrition reasonably and scientifically, treat diseases and prevent diseases, so nip in the bud is the primary problem for people to ensure their health. Regulating human immune function depends on nutrition to balance and improve lifestyle. Provide comprehensive and balanced nutrition, improve immune function,' cherish life, care for health', actively protect health by preventing diseases, get health from nutrition, and thus improve the quality of life. Nutritional deficiency, overnutrition and nutritional imbalance are three main manifestations of malnutrition, which directly affect health. Only a reasonable diet can lead a healthy life. Health needs lifelong cultivation. Nutritional supplement mainly depends on external supplement, that is, eating, but eating needs to be divided into many levels. (1) it is to maintain life, eat to survive. 2 is to satisfy the delicious food. 3 balanced nutrition, eat what you like and eat what you don't like. So you should be frugal, vegetarian, raw, slow and light. Miscellaneous, cold, zero, early, broken. Only in this way can there be health, and a healthy body can have a real life.