1, poor gastrointestinal function: it is not advisable to eat more. Onions are spicy and irritating, especially not suitable for raw onions. Cooked onions can be eaten in moderation, not too much.
2, bad eyes: you can't eat too much. If your eyes are not particularly good, don't eat too many things like onions and garlic, because onions contain some substances that are not good for your eyes.
3. Onions should not be eaten excessively. Although onions are good, they should not be eaten in excess. It is most suitable for normal people to eat 50 to 80 grams of onions every day. In addition, people with gastric insufficiency, indigestion and heat constitution should be careful when eating onions, and must not eat more.
Onion history
Onions originated in Central Asia or West Asia, and there are many different varieties, which are used in foods all over the world. There are pictures of harvesting onions in ancient Egyptian stone carvings in BC 1000, and then spread to the Mediterranean region. During the Western Han Dynasty, Zhang Qian communicated with the Western Regions and brought back many species from the Western Regions. At that time, there were records of planting onions in the western regions. After the great geographical discovery, it spread from Europe to the world.
16th century, introduced to North America. /kloc-spread to Japan in the 0/7th century. /kloc-in the 0/8th century, Lingnan Miscellanies recorded that onions were introduced to Macau by white Europeans and planted in Guangdong. According to the information of Checheng Town Office, in 19 12, a Japanese primary school teacher who taught in Tamsui introduced onions from Japan to Taiwan Province Province for the first time. Starting from 19 18, the Agricultural Laboratory of Governor's Office of Taiwan Province Province tried to plant onions all over Taiwan Province Province, but the effect was not good.