1. Supplement calcium and strengthen bones. Onions are rich in calcium, comparable to calcium-rich vegetables such as rape and cabbage. They also contain magnesium and potassium. The calcium to phosphorus ratio is also suitable, and the calcium supplement is easy to absorb.

2. Improve the intestinal environment. Onions, like burdock, asparagus and other vegetables, contain oligosaccharides, which are not digested by the stomach and small intestine, but are decomposed in the large intestine as food for beneficial bacteria such as Bifidobacterium.

3. Promote weight loss and treat constipation. Onions are rich in dietary fiber, which increases satiety and promotes defecation. In addition, the bifid factor produced by onions is also beneficial to intestinal smoothness.

4. Relieve greasiness. Cooking some high-fat meat dishes, such as steak, braised pork, grilled fish, etc., with onions can not only remove the fishy smell, but also relieve greasiness and reduce the body's absorption of fat.

5. Sterilization. Onions contain volatile propylene sulfide, which has bactericidal and antibacterial effects and can repel pests. Therefore, onions are zero pesticide residue vegetables.

6. Prevent cancer. Onions are rich in quercetin and selenium. The former inhibits the activity of cancer cells and prevents cancer cell growth, while the latter is a strong antioxidant that reduces oxidative damage in the body.

Extended information

Notes

1. Onions and fish cannot be eaten together

Fish is very rich in protein. Onions and fish If eaten together, the oxalic acid in onions will decompose and destroy the rich protein in fish, causing it to precipitate, making it difficult for the body to digest and absorb it.

2. Onions cannot be eaten together with kelp

Kelp is rich in iodine and calcium, while onions contain oxalic acid. Eating the two together will easily form precipitates that are not easy to digest and will also affect Calcium absorption.

3. Onions cannot be eaten with shrimps

Shrimps are rich in iodine and calcium. Eating them with onions rich in oxalic acid will form calcium oxalate, which is prone to stones.

3. Onions and honey cannot be eaten together

The two are incompatible ingredients. Eating them together will have a variety of adverse effects on human eyes and can easily lead to vision loss. , severe cases may lead to blindness.

Reference: People's Daily Online - What are the effects and functions of onions? One onion = 8 kinds of medicine