Bananas contain a wide range of nutrients, including potassium, vitamin C, vitamin B6 and manganese, according to Fit Day. Bananas also aid in regulating blood pressure and reducing the risk of stroke. The World's Healthiest Foods notes that potassium levels in bananas also maintain cardiovascular health.
Fit Day further notes that vitamin B6 is believed to be a mood regulator, and bananas are known for keeping depression at bay. The high carbohydrate levels in bananas make a good snack after working out. Bananas also contain protease inhibitors, which eliminate stomach bacteria that foster stomach ulcers. The fiber in bananas alleviates constipation. Bananas tend to regulate healthy bacteria levels in the intestines, allowing the body to absorb more nutrients. The World's Healthiest Foods mentions that the regulation of healthy bacteria nurtures the digestive tract.