But bananas might not be the ideal pick for everyone. Manaker says they might not be the best choice for those following a low-potassium diet or those who get elevated blood sugar after eating.
Bananas contain carbohydrates and sugars, which raises questions about whether they’re a healthy food for people with diabetes. However, according to Harvard T.H. Chan School of Public Health, bananas contain resistant starch, similar to fiber, and release less glucose into the bloodstream than non-resistant starches, like white bread.
In addition to their carb content, bananas are known for their potassium, an important electrolyte vital to cell and muscle function and heart health. Potassium and sodium work together and need to be in balance. Hyperkalemia occurs when your blood potassium levels are too high, although this condition is rare. Medical experts estimate that only 2% to 3% of people have high potassium levels, according to the Cleveland Clinic.
“For a generally healthy person, it is unlikely to experience hyperkalemia by eating one banana a day, especially if the rest of their diet isn’t excessively high in potassium-rich foods,” Manaker says.
The Bottom Line
So yes, a banana a day is most likely safe. But this depends on your individual health and diet. Overall, Manaker recommends people eat a variety of fruits and veggies. “While eating a banana every day isn’t bad for many people, it may be more beneficial to eat different fruits, with bananas sprinkled into the rotation.”
She adds that the amount of bananas someone can eat in a day depends on the rest of their daily diet. For someone with a stomach bug who can only stomach bananas, she said that having more than one is likely acceptable. But it’s probably not the best idea for those eating many bananas on top of “mass quantities” of carbohydrate-rich foods.
As they say, too much of anything—even fruits—can have its downsides, so it’s best to aim for a balance.
Tired of plain old bananas? Put your produce to use with a peanut butter banana smoothie or banana nut bread (to use up those super ripe ones). Trying to diversify your fruit intake? From grilled fruit and colorful fruit salads to a vibrant blueberry smoothie, we’ve got you covered.
