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Wednesday, 29/4/2026 | 18:02 GMT+7

What happens to the digestive system when eating bananas daily?

Bananas contain prebiotic fiber that helps balance gut bacteria, protects the stomach lining, and boosts the immune system.

Increased fiber intake

Fiber is crucial for overall health, especially for the digestive system. Adults should consume 28 to 34 g of fiber daily. A banana contains approximately 5 g of fiber, making it a healthy dietary choice. This nutrient also helps soften stool, reducing constipation and diarrhea.

Improving gut microbiota

Bananas contain prebiotic fiber, which serves as food for beneficial bacteria in the gut microbiome. A balanced gut contributes to blood sugar control, enhanced nutrient absorption, reduced risk of colorectal cancer, and supports the immune system. Additionally, antioxidants in bananas help neutralize unstable free radicals naturally produced in the body, which cause oxidative stress and DNA damage.

Potassium for body hydration

Bananas contain potassium, an electrolyte that helps the body maintain hydration (water balance), nerve function, and muscle function, all essential for proper digestion. This nutrient also helps regulate blood pressure, stabilize heart rate, reduce stroke risk, and aids the body in eliminating excess sodium. Adults need approximately 3,500-4,700 mg of potassium daily to maintain body function.

An average banana provides about 326-450 mg of potassium, meeting approximately 9-10% of the body's daily needs.

Controlling indigestion or stomach pain

Bananas contain pectin fiber, which helps stabilize bowel movements, reducing symptoms of bloating and indigestion. This fruit is easily digestible and also helps the stomach produce more mucus, protecting the lining from irritants. However, improper consumption, such as eating on an empty stomach or when overripe, can have adverse effects.

Promotes satiety

Bananas are relatively low in calories (approximately 113 calories per fruit) and contain fiber and resistant starch. These nutrients contribute to increased satiety, which is important for maintaining a healthy weight.

For many, bananas are a healthy food to include in their diet. However, individuals taking certain medications may need to limit their intake due to potassium content. Some blood pressure medications can easily increase blood potassium levels excessively.

Le Nguyen (According to Very Well Health)

Readers can submit nutrition questions here for a doctor's response.
By VnExpress: https://vnexpress.net/dieu-gi-xay-ra-voi-he-tieu-hoa-khi-an-chuoi-moi-ngay-5068235.html
Tags: banana nutrition

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