In fact, most people are in an intermediate state of incomplete health and disease-free to varying degrees, which is called sub-health state in medicine, also known as "the third state". Sub-health is the interval between health and disease, which can be large or small and will affect the potential of social labor force. Without reasonable nutrition, it is impossible for many people to move from sub-health to complete health.
The whole process of one's life is inseparable from nutrition. In the fetal stage, people must get all the nutrients they need from their mothers. The nutrition of pregnant women not only affects the growth and development of the fetus, but also lays the foundation for the child's future health. The rational nutrition of infants and adolescents plays a decisive role in his physical and mental development.
Reasonable nutrition is an important material basis for middle-aged and elderly people to maintain vitality and delay the aging process. For patients with diseases, reasonable nutrition can enhance the body's resistance and promote early recovery. It can be said that nutrition is a very important event related to the healthy development of the whole society and its members. In order to maintain and improve health, we should achieve a good diet balance while doing moderate activities and rest.
The so-called dietary balance, including the balance of nutrients, recipes suitable for taste, safety and hygiene, has been met. The basic problem directly related to health is the balance of nutrition. In order to maintain life, live a healthy life, be energetic and have a good diet, the first condition is to take in all kinds of nutrients in moderation, which is neither insufficient nor excessive, and the collocation is reasonable.
Short-term nutritional imbalance will often make people in a sub-health state, and in the long run, people will eventually suffer from various diseases, so nutritional imbalance can be regarded as one of the most basic elements of various diseases. The root cause of nutritional imbalance is the imbalance in the proportion and quantity of various nutrients.
There are two common nutritional imbalances. One situation is nutrient deficiency, which means that one or more nutrients are insufficient for a long time and cannot meet the needs of the body, which is called malnutrition; The resulting diseases include rickets (vitamin D deficiency), night blindness (vitamin A deficiency), various malnutrition anemia (folic acid, vitamin B 12, iron deficiency), iodine deficiency dwarfism, scurvy (vitamin C deficiency) and so on. Another situation is the imbalance of nutrient intake ratio, that is, long-term intake of one or more nutrients is too much, which is called overnutrition, such as simple obesity. This statement is not accurate enough, because there are not too many nutrients, and there may be insufficient intake or excessive intake once or twice, so it is more accurate to call it malnutrition.
In the initial stage of nutritional imbalance, there are often no signs and symptoms, and sub-health is more common. Accurate testing can sometimes find slight abnormalities, but it is also difficult to diagnose. Of course, proper radical treatment is often not carried out. This treatment is to adjust eating habits, change unreasonable eating habits, and cut back on excess intake.
If the nutritional imbalance is not treated, in the long run, it will often lead to serious diseases before people pay attention. It's too late to diagnose and treat at this time. Almost all chronic diseases, such as various cancers, essential hypertension, arteriosclerosis, coronary heart disease, diabetes, even acute diseases and infectious diseases, are related to this, but malnutrition is only an important aspect of the causes of these diseases.