The nutritional experts agree that the nutrients can be protected to the full extent in the uncooked vegetables. Therefore, if possible, people can eat the uncooked vegetables so as to absorb the nutrients effectively. Generally speaking, six kinds of uncooked vegetables can help people keep healthy. They mainly include cucumber, tomato, chili, celery, cabbage and eggplant. 

Cucumber contains vitamin C, vitamin B complex and mineral substances. The nutrients contained in the skin are also abundant. Therefore, people should eat the uncooked cucumber as far as possible. However, in order to remove the pesticides from the food, people should immerse the food in the salty water for 15 to 20 minutes and then wash them in clean water. In addition, the cold vegetable dish in sauce should be eaten immediately after it is prepared, or the vitamins contained in it can be destroyed.

Tomato contains abundant vitamin A which can protect the eyesight and the human skin. When people eat the cold tomato, they should not add sugar into the dish, as the sweet taste can affect the appetite. In addition, the patients with obesity, diabetes and high blood pressure should not eat the cold tomato with sugar.

Chili contains a large amount of vitamin C which can improve the immunity to prevent various diseases effectively. It is necessary for people to eat chili in everyday life so as to improve the immunity, as people always touch the virus because of the environmental pollution.

Celery contains abundant coarse fibers, potassium, vitamin B2 and nicotinic acid. In summer, people are easily attacked by constipation and excessive internal heat. The adequate intake of celery can help people relax the bowels and adjust the balance of sodium and potassium. Vitamin B2 can help people prevent weariness and oral ulcer.

Cabbage contains high content of dietary fibers and vitamin A. the frequent intake of cabbage in summer can protect the eyes and beautify the skin for people. However, the cabbage should not be stored for a long time, or the nutrients can be seriously lost. In addition, the patients with the digestive ulcer should not eat the uncooked vegetables, or the coarse fibers can stimulate the gastric and intestinal tracts.

Eggplant contains rich selenium. It can also resist oxidation, maintain the normal functions of internal cells, improve the immunity and resist various diseases for the human body. It can even resist cancer though the metabolism inside the human body.