Is eating banana good for your eyes?

　　“People who often work in front of computers often feel that Eye If you have dryness and pain, eating a banana every day can provide some relief.

　　The eye-protecting function of bananas is first related to its rich potassium content. Excessive salt intake by the human body will cause a large amount of water to be retained in the cells, causing eye redness and swelling. The potassium in bananas can help the body excrete these excess salts, allowing the body to achieve a potassium and sodium balance and relieve eye discomfort.

　　In addition, bananas contain a large amount of beta carotene. When the human body lacks this substance, the eyes will become painful, dry, dull, and dehydrated. Eating more bananas can not only alleviate these symptoms, but also relieve eye fatigue to a certain extent and avoid premature eye aging. ”

　　Bananas contain a lot of beta-carotene. Is this true? Let’s check the food ingredient list.

　　According to my country’s 2002 version of the food ingredient list, every 100 grams of ordinary bananas contains 60 micrograms of beta-carotene, which is equivalent to an adult’s male 1.25% of daily vitamin A requirement； According to my country's 2004 version of the food ingredient list, every 100 grams of Thai red bananas contains 38 micrograms of beta-carotene, which is equivalent to 0.79% of the daily vitamin A required by adult men. ； According to the food composition tables of the United States and Canada, this value is about 1%.

　　It can be seen that no matter what version of the food ingredient list, there is only one conclusion: bananas cannot provide a large amount of beta-carotene at all, and they cannot supply enough vitamin A to the human body.

　　In fact, there is no need to check the food ingredient list, everyone can see it with their eyes: carotene is orange, while bananas are obviously white, and no one eats the yellow skin. That being the case, where could the carotene be hidden?

　　On the other hand, carotene is a fat-soluble substance that relies on fat to help absorb it. Bananas are usually eaten between meals and eaten alone, without being fried in oil or mixed with salad dressing. The absorption rate of its little carotene is also quite low and can be completely ignored.

　　From these two points, it can be seen that bananas cannot provide beta-carotene at all, so this is definitely not the reason why it is good for the eyes. In contrast, papaya and mango are the best sources of carotene in fruits, and apricots, persimmons, peaches and loquats also contain far more carotene than bananas.

　　However, bananas do contain quite a bit of potassium. Bananas contain more than 180 mg of potassium per 100 grams, making them a high-potassium and low-sodium food. However, such foods are not limited to bananas. If calculated in terms of unit calories, common fruits such as kiwi, papaya, mango, orange, hawthorn, cherry, and apple are higher than bananas.

　　In fact, all fruits and vegetables contain large amounts of potassium, and green leafy vegetables contain up to 20 times more beta-carotene than bananas. Should we say this: People who often look at computers should eat more vegetables, more oranges, and more mangoes……

　　If you eat fruit with a little yogurt, milk, etc., it will not only increase vitamin A necessary for dark-light vision, prevent eye redness and photophobia, vitamin B2, and help relax eye muscles with calcium, but also provide a small amount of oil to fully absorb the carotene in fruits and vegetables.

　　Therefore, yogurt + fruit is the best late-night snack for computer users. healthy Snacks to match.