Medical research has proved that eating raw vegetables can retain the nutrition in vegetables to the maximum extent, and has the functions of preventing cancer and many diseases. Most vegetables contain an immune substance-interferon inducer, which acts on the interferon gene of human cells, can produce interferon, become the "guardian" of human cells, and has the functions of inhibiting cancer and antiviral infection of human cells. But this "interferon inducer" can't withstand high temperature, and only raw vegetables can play a role. Therefore, all vegetables that can be eaten raw are best eaten raw; Don't fry vegetables that can't be eaten raw, and try to reduce the loss of nutrition. Vegetables suitable for raw food are carrots, cucumbers, tomatoes, sweet peppers, lettuce, cabbage, cabbage, eggplant, cauliflower, peppers, onions, celery and so on. The methods of eating raw include drinking homemade fresh vegetable juice or cold mixing fresh vegetables. It's best not to peel raw cucumbers, and don't scald tomatoes, because vitamin C will change after scalding and taste very sour. Raw lettuce is best peeled and washed first, then scalded with boiling water, mixed with seasoning and pickled 1 ~ 2 hours before eating. However, we should pay attention to the unity of nutrition, health and hygiene when eating raw vegetables, and beware of "illness from the mouth". When eating fruits and vegetables raw, they must be disinfected. When vegetables are cold-mixed, vinegar, garlic and Jiang Mo can be added, which can both flavor and sterilize.

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