1.

The pungent smell of onion can stimulate the secretion of stomach, intestine and digestive gland, stimulate appetite and promote digestion.

2.

Onion contains sulfide and trace element selenium, which can be used to treat dyspepsia, anorexia and dyspepsia.

3.

Allium plants such as onion, garlic, scallion and leek contain anticancer chemicals, which can inhibit gastric cancer, esophageal cancer, colon cancer and breast cancer. A survey conducted by researchers in a high incidence area of gastric cancer in Shandong Province, China, found that the more onions you eat, the lower the risk of gastric cancer.

Precautions for eating onions:

1.

Onions and honey can't be eaten together. Eating together is not good for eyes, it will cause eye discomfort and even lead to blindness.

2.

Onion and kelp can't be eaten together, kelp is rich in iodine and calcium, onion contains oxalic acid, and eating onion and kelp together is easy to form stones.

3.

Onions and fish can't be eaten together. Fish is rich in protein. Onions and fish can be eaten together Oxalic acid in onion will decompose and destroy the rich protein in fish, making it precipitate, which is not easy to be digested and absorbed by human body.

4.

Onions and shrimps can't be eaten together, and shrimps form calcium oxalate and produce stones.

5.

People with itchy skin diseases, eye diseases, stomach diseases and lung and stomach inflammation should eat less. Onions are pungent, warm and should be used with caution for patients with fever.