Not eating meat has both positive and negative effects on the body. For most people, there are more adverse effects of not eating meat. It is recommended that the majority of the population eat a reasonable diet on a daily basis to avoid unreasonable dietary structure. If it is not a necessary situation, meat should be eaten appropriately according to their specific situation, which helps to maintain a balanced nutrition and is beneficial to health. Meat food contains a large amount of protein, fat, amino acids, as well as iron, calcium and other trace elements, especially vitamin B12, common plant foods contain less, generally more in meat. If you do not eat meat for a long time, it can lead to insufficient intake of the above nutrients, which can easily affect the body’s development, metabolism, and fetal growth. In addition, it may also cause hypotension, anemia, endocrine disorders and many other phenomena, which is not conducive to health. Therefore, it is not recommended to eat only vegetarian food, especially for children and pregnant women, and the daily diet must be a combination of meat and vegetables. For patients suffering from obesity, as well as hypertension, hyperlipidemia, heart disease and other cardiovascular diseases, you can choose not to eat meat in stages, which helps to reduce cholesterol and fat levels, and has a certain auxiliary effect on preventing the aggravation of the disease. Such patients should also pay attention to the choice of cooking methods during the vegetarian-only phase, trying to steam, boil and stir-fry as much as possible, avoiding deep-frying and stir-frying, and reducing the cooking oil used. In addition, meat can be supplemented at the appropriate time during follow-up visits according to the doctor’s instructions.