Cucumber contraindications: 1, fasting eat less raw cucumber cucumber and the role of heat detoxification, is a cool food, cooked with the same heat effect, nutrition can also achieve a large degree of retention. Eat raw unclean cucumber easy to infect bacteria, affecting health. The market bought cucumber, good to wash and peel food or boil food, with high temperature to achieve the role of sterilization. So you can eat cucumber on an empty stomach, but it is good to eat cooked cucumber, clean and hygienic. As cucumber is cold, people with poor stomach and intestines should not eat on an empty stomach. 2, cucumber is not suitable for eating with alkali Cucumber contains more calcium, phosphorus, iron, carotene, vitamin C, etc. These nutrients make cucumber has many beneficial effects on human health. However, the vitamins contained in cucumber are more stable under acidic conditions, and extremely unstable under neutral and alkaline conditions. When cucumber and alkaline food together, will destroy the vitamin, reduce the nutritional value of cucumber. 3, cucumber should not be abandoned juice system stuffing food cucumber meat system delicate water and cucumber contains most of the vitamins are water-soluble vitamins, such as vitamin C, and cucumber made of juice, high juice rate, low slag rate, most of the nutrients in the cucumber are present in the cucumber juice, only a small number of nutrients and most of the cellulose in the cucumber slag, at this time, if the juice of the cucumber abandoned juice to take slag system, is It is very wasteful, it can be said to buy a box and return the pearl. 4, the spleen and stomach weakness, abdominal pain and diarrhea, lung cold cough patients should not eat cucumber cucumber taste sweet, cold, spleen and stomach cold, weakness of the body should not eat, cucumber is rich in water and dietary fiber can lubricate the intestines, prevent constipation, so diarrhea patients should not eat cucumber, otherwise it may aggravate the condition.