A balanced diet can not only meet various physiological needs of the body, but also prevent the occurrence of various diseases, so it is a reasonable diet.
2. The human body needs various nutrients; Not a few foods can satisfy all the nutrients needed by the human body, if you only eat a few monotonous foods; You can't meet the human body's demand for multiple nutrients. Eating a monotonous diet for a long time is not good for growth and health, and the proportion of various foods in the diet should be appropriate. The human body needs all kinds of nutrients, which depend on each other, influence each other and restrict each other. For example, the human body needs more calcium, and the digestion and absorption of calcium must be completed together with vitamin D, which is a fat-soluble vitamin. If the intestine is short of fat, vitamin D cannot be well absorbed by the intestine. Only by eating vitamin D and a certain amount of fat can vitamin D be digested and absorbed by the absorbed fat. Bile must have played a role Bile is
If the liver secretes bile, it must ensure the supply of protein. So, how do protein, fat and sugar interact? If people don't eat enough sugar and fat, and the heat supply in the body is not enough, they will decompose protein in the body and release heat to supplement the deficiency of sugar and fat. But protein is the "building material" that constitutes the human body. Without it, it will seriously affect health. If we ingest enough sugar and fat at the same time as protein, we can reduce the decomposition of protein and use it to repair and build new cells and tissues.
Don't eat too much fat. Especially saturated fat, because the harm of excess fat to health has become the knowledge of scientists all over the world.
4. Control energy intake. Because excessive energy will mainly cause obesity, which has become a global health problem and will lead to a variety of "civilized diseases", the principle of "living within our means" should be adopted in the balance of energy.
Don't eat too much refined sugar. Refined sugar is some monosaccharides and disaccharides extracted from food. They only provide heat energy to the human body and contain no other nutrients. It is a pure heat energy food, mainly used as flavoring agent, and its nutritional value is not high.
6. Limit salt intake. Although sodium and chlorine in salt are both inorganic salts needed by human body, the required amount is not large, and the actual consumption is 2-3 times of the required amount, so it is necessary to develop the habit of eating light food.
7. Drink alcohol in moderation. Wine is a food containing ethanol; Ethanol is not a nutrient, and drinking too much is harmful to your health.
A reasonable and balanced diet can make people engage in mental and physical activities energetically. On the contrary, unreasonable diet is not conducive to health and even induces many diseases.