Is it healthy to eat a banana every day? “Eating a banana daily can be an excellent way to incorporate essential nutrients from fruits into the diet.” A healthier heart“The potassium and magnesium in bananas can support healthy blood pressure and cardiovascular health,” said Dandrea-Russert. Possible drawbacks of eating bananasWhile it’s perfectly healthy to eat a banana every day, some people may experience some side effects from regular banana consumption. Rich in potassium, magnesium, and B vitamins, bananas may also support healthy blood pressure and cardiovascular health.