Modern research shows that lentinan is-1, 3- glucan extracted from Lentinus edodes, which is an anticancer agent for injection and an activator of biological reaction. The results show that lentinan can inhibit the proliferation of cancer cells, improve immune function and reduce the adverse reactions during cancer chemotherapy, and it is also suitable for clinical use at present. So, do these facts mean that "eating mushrooms often can reduce the risk of cancer"?

Mushrooms are actually a general term for a large class of edible mushrooms. There are thousands of edible fungi with high nutritional value. However, in the field of anti-cancer, there is no evidence that eating more mushrooms can play an anti-cancer role, whether lentinan can fight tumors, and eating mushrooms can play an anti-cancer role. There is a word in pharmacology called "two-effect relationship" Generally speaking, drugs must have a certain dose and concentration in order to play a role in this range. Not if the dose is small. Therefore, even if some components of mushrooms have good anti-tumor effect, they must be extracted, concentrated and given appropriate dosage to play their role, but mushrooms have no anti-cancer effect as food. Moreover, there is no definite research result that edible mushrooms can fight cancer.

Mushrooms are nutritious family food. Eating mushrooms is no problem for health, but it is not credible as an anticancer drug to prevent cancer. Mushrooms have high nutritional value and many health functions. Eating mushrooms often can prevent tumors and cancer. Mushrooms are rich in protein, vitamins and dietary fiber, which can reduce the content of cholesterol in blood. Mushrooms have the effect of nourishing qi and blood, and can effectively improve spleen and stomach deficiency and cold. The protein content of mushrooms is very high, which is much higher than that of ordinary vegetables and fruits. The amino acid composition of protein in some mushrooms is better than that of beef. Studies show that the nutritional value of mushrooms is second only to milk.

The content of vitamin C in every 100g fresh mushroom is 206.28mg, which is 2~8 times that of guava, grapefruit, pepper and other fruits and vegetables rich in vitamin C. In addition, it also has detoxification effect, helps to discharge harmful substances such as lead, arsenic and benzene, and has good anti-cancer effect. Mushrooms, also known as the treasure house of vitamin A, are rich in vitamin D, which can promote the absorption of calcium well and is good for bone health. The cellulose content of mushrooms far exceeds that of ordinary vegetables, which can prevent constipation, reduce the cholesterol content in blood and delay the absorption of carbohydrates.