1, easy to cause eye paste and fever.

2, people with itchy skin diseases, eye diseases, stomach diseases, lung and stomach inflammation should eat less.

3, onion Xin Wen, patients with fever should be careful.

Taboos for eating onions:

1. Onion and Toad: Eat and you will die. Rescue: the car money is decocted in one or two waters;

Second, onions and honey are alike: the same food will hurt the eyes, cause eye discomfort, and seriously lead to blindness. Because honey has the function of clearing away heat, onion contains a variety of bioactive substances. When it meets organic acids and enzymes in honey, it will react chemically, produce toxic substances, and stimulate the gastrointestinal tract, leading to abdominal distension and diarrhea.

Third, onions and shrimps are gram-like: calcium oxalate is formed to produce stones.

Extended data:

The benefits of eating more onions

1, sterilization and anti-cold. Onion contains phytoncide, such as allicin, which has strong bactericidal ability and can effectively resist influenza virus and prevent colds. When this phytoncide is excreted through respiratory tract, urinary tract and sweat gland, it can stimulate the secretion of cell pipeline wall in these positions, so it has the functions of eliminating phlegm, diuresis, sweating, bacteriostasis and antisepsis.

2, prevent cancer Onion's anti-cancer effect comes from its rich selenium and quercetin. Selenium is an antioxidant, which can stimulate human immune response, thus inhibiting the division and growth of cancer cells and reducing the toxicity of carcinogens. Quercetin can inhibit the activity of carcinogenic cells and prevent the growth of cancer cells. According to a survey, people who often eat onions are 25% less likely to suffer from gastric cancer than those who don't, and 30% fewer people die from gastric cancer.

3, promote gastrointestinal peristalsis, help digest onions containing allicin, with a strong aroma, which often makes people cry because of the pungent smell during processing. It is this special smell that can stimulate gastric acid secretion and increase appetite. Animal experiments have also proved that onion can improve gastrointestinal tension and promote gastrointestinal peristalsis, thus playing an appetizing role, and has obvious effects on anorexia caused by atrophic gastritis, insufficient gastric motility and dyspepsia.

4. Lowering blood pressure Onion is the only plant containing prostaglandin A. Onion is the only known food containing prostaglandin A, and it is a natural blood thinner. Prostaglandin A can dilate blood vessels and reduce blood viscosity, thus lowering blood pressure, reducing peripheral blood vessels and increasing coronary blood flow, and preventing thrombosis. It can resist the effect of pressor substances such as catecholamine in human body, and promote the excretion of sodium salt, thus lowering blood pressure. Regular consumption has health care effect on patients with hypertension, hyperlipidemia and cardiovascular and cerebrovascular diseases.

References:

The efficacy and taboo of onion-People's Network