A medium-sized banana has about 105 calories and only 0.5 grams of fat . The average American eats around 100 bananas a year, so the amount you eat isn't that much. Bananas also offer potassium , magnesium and vitamin B6 .
A medium-sized banana has about 105 calories and only 0.5 grams of fat . Bananas do contain 14 grams of sugar , but that comes with a healthy dose of fiber . Bananas also offer potassium , magnesium and vitamin B6 .