First, vegetarianism can fight cancer. The American Cancer Center pointed out that eating a lot of fresh fruits and vegetables can greatly reduce the risk of cancer such as liver cancer, colon cancer, pancreatic cancer, gastric cancer, bladder cancer, cervical cancer and ovarian cancer. People who eat a lot of fruits and vegetables are less likely to get cancer than those who don't eat regularly.

Second, vegetarianism is good for the heart. Eating a lot of vegetables and fruits can reduce the chances of heart attack and stroke. Scientists at Harvard University pointed out that if women eat one more carrot every day, the incidence of heart disease can be reduced by 22% and the incidence of stroke can be reduced by 70%.

Third, vegetarians live longer. Many studies show that vegetarians live longer. This is not only a matter of diet, vegetarian food is also conducive to the formation of a healthier lifestyle. After investigating the lifestyles of vegetarians and non-vegetarians, it is found that vegetarians are less likely to be ill and hospitalized than meat eaters, and there are fewer vegetarians.

Disadvantages:

First, a vegan diet leads to a lack of high-quality protein animal food. For example, protein in lean meat, milk, eggs and fish all contain 8 kinds of essential amino acids, and the amount is relatively large. All kinds of amino acids have proper proportions, and their biological characteristics are close to that of human body, that is, they are very similar to the protein structure of human body and are easily digested and absorbed by human body.

2. Vegetarians have a higher probability of hyperglycemia, because you can't get the energy of protein and fat from meat, and vegetarians can only supplement it from rice, pasta and other foods, which often leads to the risk of hyperglycemia.

3. Perennial vegetarianism leads to micronutrient deficiency. Micronutrients, that is, minerals and vitamins, are less nutrients for human body, but they are essential substances for survival, growth and development, physical activity and health.

References:

People's Network-Vegetarianism can enhance immunity. What are the benefits of vegetarianism to human body? References:

People's Daily Online-Being vegetarian all the year round does more harm than good to health.