First, blueberry: to eliminate eye fatigue and discomfort.
White-collars have to work in the office and stare at the computer screen for a long time every day. This will easily cause eye fatigue or discomfort. This is because a large number of vitamin A is consumed in the body, while vitamin A is a key element for the health of eyes. In such a case, it is a good idea to eat some fruits which can provide a lot of vitamin A and β-carotene, while the most typical one is blueberry. In fact, blueberry not only can eliminate eye fatigue and discomfort, and improve eyesight, but also has many other effects, such as slowing down brain aging, improving human memory, strengthening blood vessels, promoting blood circulation, and so on. As a result, it is regarded as a "super fruit" by many people.

Second, kiwi fruit: to cure bleeding gums.
The health of gums is closely related with the vitamin C in the body. When the human body lacks of vitamin C, the gums will become fragile, and may lead to bleeding and swelling. The content of vitamin C contained in kiwi fruit is the most abundant among all the fruits. As a result, it is the most beneficial fruit for the health of gums.

Third, grape: to help expel the toxins in the lung.
If you have been a smoker for a long time, there must be a large number of toxins accumulated in the lung, which may damage the function of lung and threaten the health of the body. In such a case, you can eat more grapes in daily life. This is because the effective ingredients in grape can increase the metabolic rate of human cells, and promote the detoxification of lung cells. What's more, grape also has an expectorant effect, and can relieve the inflammation, itching of respiratory tract and other symptoms which are caused by smoking.

Fourth, orange: to get rid of the trouble of beriberi.
When the human body lacks of vitamin B1, it can easily cause beriberi. A lot of people are troubled by beriberi, because this odor of the body will give other people a bad impression. In such a case, the most suitable choice is to eat more oranges. This is because orange contains a large number of vitamin B1, which can promote the metabolism of glucose, so as to effectively prevent and treat beriberi.