Onion and onion products have high sugar content. Onion fructose is completely sugar, which not only contains eight essential amino acids, but also has high nutritional value. Onions also contain fat, carbohydrates, sugar and sugar. According to the theory of traditional Chinese medicine, onion is sweet in taste and cool in nature. When it enters the spleen, stomach and intestine, it has the effects of invigorating qi, harmonizing middle energizer, promoting fluid production, moistening dryness, clearing away heat and detoxicating, and can be used for curing conjunctival congestion, quenching thirst, relieving sulfur and toxic liquor. Although onions are good, eating more is also bad, and eating too much is also harmful to health.
1: Promote the formation of arteriosclerosis.
American medical experts pointed out that onions are rich in methionine, which can be converted into cysteine under the action of enzymes. Cysteine can damage endothelial cells of arterial wall, and it is easy to deposit cholesterol and triglyceride on arterial wall, thus promoting the formation of arteriosclerosis.
2. Promote the decline of renal function
Under normal circumstances, the plant sugar ingested by people undergoes metabolic changes, and finally most of it becomes nitrogen-containing waste, which is excreted by the kidneys. When people get old, the ability of the kidneys to excrete waste decreases. At this time, if you don't pay attention to diet, eat a lot of onions and eat too much plant sugar, it will inevitably increase the nitrogen-containing waste produced in the body, increase the burden on the kidneys, and further reduce the renal function, which is not conducive to health.
3. Cause indigestion
Onions are rich in sugar. Eating too much at a time not only hinders the absorption of iron, but also easily causes discomfort symptoms such as sugar indigestion, abdominal distension and diarrhea.