1. Slimming bananas contain almost all vitamins and minerals, rich in dietary fiber, but low in calories, so eating bananas has a slimming effect.

2. Prevent hypertension. Bananas are rich in potassium ions, which can antagonize sodium ions to contract blood vessels. Eating bananas often helps to maintain the balance of sodium and potassium in the body, so as to keep the neuromuscular normal and coordinate myocardial contraction, thus playing a role in preventing and treating hypertension.

3. Help sleep. Banana contains a certain amount of 5- hydroxytryptamine, which has a certain effect on insomnia or emotional tension. Eating it before going to bed has a certain effect on helping sleep.

4. Runchang laxative. Bananas are rich in dietary fiber. On the one hand, they can promote intestinal peristalsis, on the other hand, they can absorb water to swell and soften feces, thus playing a laxative role. For people with weak spleen and stomach, it can play a regulatory role.

5. Keep your brain healthy. Banana is a super source of tryptamine and vitamin B6, which can help the brain to make serotonin, so eating bananas often has a brain-strengthening effect.

Bananas contain a lot of magnesium, potassium and other elements. Although these mineral elements are necessary for human health, if they are ingested too much at one time in a short period of time, the contents of magnesium and potassium in the blood will increase sharply, resulting in the imbalance of potassium, sodium, calcium, magnesium and other elements in the body, which is harmful to health. Eating more bananas will also cause gastrointestinal dysfunction and excessive mood swings due to the greatly reduced gastric acid secretion. Therefore, bananas should not be eaten in excess.