Calories in a Banana: How Many Calories Does a Banana Have?

The calories in a banana come primarily from carbohydrates, which provide energy to the body. Bananas are one of the most affordable superfoods. They're incredibly nutritious and contain numerous health compounds.

Calories in one banana and myths. (Image via Pexels/ Andrea Ch)

Not surprisingly, bananas also have a lot of rumors about them: Bananas can cause you to gain weight; bananas are not recommended for diabetics; bananas are too high in sugar.

In this article, we will look at the nutrition and calories in a banana, and how you can include them in your diet.

Calories in a Banana

On average, a medium banana provides 105 calories. However, the number of calories in a banana varies according to its size.

The calorie value of normal banana sizes is listed below.

Extra small (less than 6 inches, around 80 grams): 72 calories
Small (6–7 inches, around 100 grams): 90 calories
Medium (7–8 inches, around 120 grams): 105 calories
Large (8–9 inches, around 135 grams): 121 calories
Extra large (9 inches or longer, around 150 grams): 135 calories
Sliced (1 cup, 150 grams): 134 calories
Mashed (1 cup, 225 grams): 200 calories

Depending on size, the caloric content of a banana ranges from 72-135 calories. An average-sized banana provides approximately 100 calories. Bananas contain around 93% carbohydrates, 4% protein, and 3% fat.

How Many Carbs Are in a Banana?

Carbs in a banana. (Image via Pexels/ Toni Cuenca)

With three grams of fiber and 14 grams of sugar, a medium banana offers 27 grams of carbs. Bananas are an excellent source of fiber energy and are quite satiating. Adequate fiber intake is important for maintaining a healthy digestive system

The naturally occurring carbohydrates in a banana can satisfy sweet desires while providing all the health benefits of eating fruit, including fiber, vitamins, minerals, phytochemicals, and antioxidants. Antioxidants are good for your health as they help fight radicals.

There's also a reason why athletes love bananas: carbohydrates are the body's primary fuel source. The carbohydrate content of a banana can readily supply digestible glucose as a source of energy. Indeed, six of the 14 grams of sugar in a banana comprises glucose.

Additionally, bananas contain carbohydrates that are not digested for energy, especially fiber and resistant starch. If you choose a green banana as opposed to one that's yellow and ripe, you can have more of the healthy resistant starch.

Unripe, green bananas are particularly rich in resistant starch, which functions as a prebiotic, the food for the gut's beneficial bacteria.

Nutritional Profile of Bananas

Bananas are nutrient-dense and entail numerous health benefits. The nutrition in a banana comes from fiber, carbohydrates, and important vitamins and minerals.

Check out the nutrient profile of bananas below:

Potassium: 9% DV

Vitamin B6: 25% DV

Vitamin C: 11% DV

Magnesium: 8% DV

Copper: 10% DV

Manganese: 14% DV

Fiber: 3.07 grams

A medium banana has approximately 105 calories, of which 90% are from carbohydrates. Most carbohydrates in ripe bananas are sugars, including sucrose, glucose, and fructose.

Bananas, meanwhile, are poor in fat and protein. But they do include several useful plant chemicals and antioxidants, such as dopamine and catechin. Increasing dopamine levels naturally can be achieved through various methods, and eating bananas might just be one of the easiest.

Bananas: A Healthy Snack

Bananas, calorie for calorie, have a high fiber content. With only 105 calories, a medium banana delivers around 7% of the necessary daily requirements. Fiber is crucial for maintaining regular bowel motions and preserving gut health.

A high fiber intake is related to a lower risk of heart disease, diverticular disease, and a few malignancies. A sufficient fiber intake is also associated with weight loss. Scientists believe this may be due to the fact that fiber makes you feel fuller for longer, which may help you consume fewer calories.

Are Bananas Good for Diabetics?

Calories in a banana and diabetes profile.(Image via Pexels/Zbigniew Bielecki)

The glycemic index (GI) quantifies the extent to which a food raises blood sugar level. A food with a GI below 55 is regarded to have a low GI. Medium scores range from 56 to 69, while scores of 70 and above are considered high.

Simple sugar-rich foods are rapidly absorbed and have a high GI rating, as they induce a higher rise in blood sugar levels. A high GI diet is associated with weight gain and increased risk of obesity, type 2 diabetes, cardiovascular disease, and stroke.

Foods with carbohydrates that are taken more slowly have a lower GI and help you maintain and reduce blood sugar levels. Bananas are sometimes considered a high sugar fruit that can cause a blood sugar surge, as they contain 90% carbohydrates.

However, the GI range of bananas varies from 42 to 62, depending on ripeness of the fruit. That means they have a low to moderate glycemic index. Ripe bananas have a higher GI than their unripe counterparts. As a banana matures, its sugar content increases, which impacts blood sugar level. In general, it appears that bananas slowly release their sugars.

Bananas are an all time favourite snack for many. (Image via Pexels/ Juan Salamanca)

Low GI foods, such as bananas, may also help you feel full and maintain stable blood sugar levels. This can eventually give you better results in a weight loss diet.

Are bananas healthy?

Bananas are nutritious and healthy. They are low in calories and abundant in fiber. Depending on their size, bananas typically provide 72–135 calories and 19–35 grams of carbohydrates.

Bananas have many benefits that should make them a weight-loss-friendly food, yet there are no studies explicitly examining the impact of bananas on bodyweight.

There is absolutely nothing wrong with eating bananas as part of a balanced diet if you're looking to lose weight.