Banana is a kind of very common fruit in our daily life. Its nutritional value is very rich. Regular consumption is good for our health. But for so many years, there is always a voice saying, “Eating bananas on an empty stomach will diarrhea. "Eating bananas on an empty stomach will increase potassium." So is the danger of eating bananas on an empty stomach really so big?

One, eat bananas on an empty stomach will diarrhea

There are two ways to say that bananas are laxative: First, bananas are rich in dietary fiber, and dietary fiber has a laxative effect. Second, bananas are rich in fructose. Fructose has a laxative effect and can cause severe diarrhea.

The truth: In general, dietary fiber is a substance that promotes defecation. It consists of pectin and cellulose. It is a remnant of plant cells, but it is not digested by people's intestines, so they can soften the stool. Promoting the body's defecation, the proper amount of fiber will have health benefits, but relatively speaking, banana fiber content is not very high, so bananas do not have a strong laxative ability. Similarly, the fructose content of bananas is nothing special compared to other foods. Even though bananas have higher than average fructose content, they do not have the ability to defecate or even cause diarrhea.

Second, eating bananas on an empty stomach will increase potassium

Eating bananas will have a certain impact on the heart, because the nutrients in bananas contain a lot of elements such as magnesium and potassium. Eating bananas on an empty stomach will cause a sudden increase in the magnesium content in the blood and affect the heart.

The truth: normal blood potassium concentration is maintained at 3.5-5.5 mmol/L. If serum potassium is higher than this range, fatal arrhythmias may occur in both normal and heart patients, causing sudden death. For every 100g of bananas, about 256mg of potassium is contained, as long as 122g of bananas are taken in to make up for this 312mg of potassium. Can we say that bananas can't be eaten? No matter if it is a healthy person or a patient with heart disease, just taking more than 100 grams will kill you? Of course not!

The daily demand for adult potassium is 3,500 milligrams. Studies have shown that different people have large differences in the daily intake of potassium, ranging from 1,000-3,400 milligrams. These potassium are mainly present in cells, and only a very small amount exists in the plasma, and this very small amount of potassium exerts a great effect on various life activities of the human body. The level of blood potassium can be regulated in the human body. The kidney can filter 33g of potassium per day. Therefore, even if a healthy person consumes 30 grams of potassium per day (approximately 13 tons of banana), there is no danger of death.

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