The purpose of nutritional diet is as follows:

1. Nutritional diet can specifically implement the reference intake of dietary nutrients for various groups of people in their daily meals, so that they can consume enough energy and various nutrients as needed, while preventing excessive intake of nutrients or energy.

2. According to the needs of the population for various nutrients, combined with the varieties of local food, production season, operating conditions and kitchen cooking level, various foods can be reasonably selected to achieve a balanced diet.

3. Nutritional diet is a scientific and healthy way of eating, which is guided by scientific nutrition theory to achieve the effect of balancing nutrition and maintaining health.

4. Nutritional diet is to design recipes for one day, one week or one month according to the needs of people's bodies and the contents of various nutrients in food, so as to make the proportion of several nutrients such as protein, fat, carbohydrates, vitamins and minerals ingested by people reasonable, that is, to achieve a balanced diet. Simply put, it requires a variety of dietary structures, including cereals, meat, fruits and vegetables.

Suggestions on nutritional diet:

Reducing sodium intake can effectively reduce blood pressure and the risk of chronic diseases related to blood pressure, without any side effects on blood lipid and renal function. China recommended 2.2 grams of sodium in the past, so adults are advised to control their daily sodium intake below 1.5 grams, which is about 5 grams of salt.

Potassium can effectively prevent stroke and help normal muscle contraction. Potassium also has the effect of lowering blood pressure when hypertension is caused by high sodium intake. Healthy people will automatically excrete excess potassium, but patients with kidney disease need to control their potassium intake. Most Chinese people don't pay enough attention to potassium, and the nutritionist suggests that the daily intake of potassium per adult should be above 3.5 grams.