Bananas naturally raise and sustain blood sugar levels due to their high carbohydrate content, and they are beneficial for alleviating morning sickness. Eating two bananas before a 90-minute workout will give you enough energy to sustain your body throughout. Bananas contain three natural sugars, sucrose, fructose and glucose, which give the controlled boost to blood sugar levels that chocolates do not.
Snacking on bananas at work can be good for you if you are stressed because it regulates blood sugar, thus keeping you alert and regulating your mood. As bananas are loaded with simple carbohydrates they tend to increase your blood sugar levels in a very short period of time. Thus the serving size of banana is important and should be lower than any other fruit low in carbohydrates like a pear or an apple.
According to the American Diabetes Association, a banana that is 6 inches or shorter has about 18.5 grams of carbohydrate; a 7 to 8 in banana can contain between 27 to 31 grams of carbohydrates and a large banana that is 9 in or longer, can have up to 35 or more grams of carbohydrates. So eating a banana can cause a rise in blood sugar levels. Bananas can also help people with Seasonal Affective Disorder (SAD), alleviate stress and depression and lower blood pressure due to its high potassium content.