Adults can eat onions at intervals of more than 2 hours, because it takes about 2 hours for adults to digest onions in their stomach. It is best for the elderly or children to eat onions at intervals of 4-6 hours or more.

Honey and onions can't be eaten at the same time, especially raw onions, which will produce toxins, affect the digestive system and lead to diarrhea.

Onions can't be eaten with anything.

Tofu: Oxalic acid contained in onions and tofu is easy to form calcium oxalate, which hinders the body's intake of calcium. Not only tofu but also onions should not be eaten with other foods with high calcium content.

Jujube and fish: jujube is flat, which can replenish spleen and stomach, replenish qi and nourish blood. Eating fish and onions can cause indigestion. Therefore, it is best not to eat red dates with fish porridge made of red dates, fish and onions.

Garlic: Garlic and green onions are foods that strongly stimulate the intestines. After eating together, it is easy to have symptoms such as abdominal pain and diarrhea.

Honey: The nutritional composition of honey is complicated. When onion and honey are eaten together, organic acids and enzymes in honey meet sulfur-containing amino acids in onion, which will cause harmful biochemical reactions or produce toxic substances, stimulate gastrointestinal tract and lead to diarrhea.

Hawthorn: Onions and hawthorns are grams. Eating onions and hawthorn together is easy to make people lose sleep.