2. Onion is a kind of food with high nutritional value, which has a certain health care effect when eaten in moderation. However, for women, eating too many onions will lead to some bad consequences. Eating too much onion is spicy and warm, which is easy to get acne and affect the skin condition. Onions are also gas-producing foods, which can cause farting. More importantly, menstrual women can't eat onions, which can easily lead to dysmenorrhea and other adverse symptoms.

3. Prevention of diseases: Onion is an excellent health medicinal material. Onions contain a lot of ingredients that are beneficial to human health. Eating it can prevent cardiovascular and cerebrovascular diseases such as hypertension, hyperlipidemia and myocardial infarction, which is beneficial to people's health.

4. Onion is pungent and contains certain volatile oil components and cellulose components. Eating it can promote gastrointestinal digestion and enhance people's appetite, which is very suitable for some people with loss of appetite and indigestion.

Onion also contains certain vitamins and nicotinic acid, which has a certain maintenance effect on human skin cells, so it also has a certain skin care effect.