Many people are often undernourished in middle age, which is mainly related to people's ordinary living habits. Usually the pressure is too great, and the eating time is irregular. Of course, for those who leave home, there is no nutrition, which makes people's nutrition seriously unbalanced. Therefore, for middle-aged people, we must pay attention to supplement their own nutrients, especially protein, vitamins and other essential substances to avoid malnutrition.

Principle 2: Choose foods with low salinity.

Salt is something we eat every day, and it is also a necessary substance for our bodies, but it must be eaten in moderation and not in excess, because if the content in the body is too large, it will lead to thyroid diseases. In addition, excessive salt intake will increase blood concentration, and blood vessels will be blocked, which will lead to diseases such as hypertension.

Principle 3: Food diversification

There are generally two kinds of food on the dining table: staple food and complementary food. The staple food is generally whole grains, and the complementary food is some common vegetables. Therefore, we must pay attention to reasonable collocation in diet to ensure that our nutrients are sufficient, because this will be more conducive to metabolism in the body and will not lead to some diseases because of the lack of certain nutrients.

Principle 4: Insist on eating less and more meals.

Men always gobble up their food, but if they always overeat, it is not conducive to the digestion of the body and will also increase the burden on the stomach. Therefore, we must follow the principle of eating less and eating more meals, which is not only beneficial to the digestion of things in the body, but also can effectively absorb nutrients.