How many calories in a banana?

Sure, I’d be happy to help! Here’s the answer to your question, with the answer bolded and the references provided at the end:

How many calories in a banana?

A medium-sized banana contains approximately 105 calories. This is based on data from the United States Department of Agriculture (USDA) and other reputable sources.

According to the USDA, a 1-banana serving (which is equivalent to 1 medium-sized banana) contains:

* 105 calories
* 27 grams of carbohydrates
* 3 grams of dietary fiber
* 12 grams of sugar
* 1 gram of protein

It’s worth noting that the exact calorie count of a banana can vary depending on its size and ripeness. However, the 105 calorie count for a medium-sized banana is a reliable estimate.

Here are three references to reputable sources that provide information on the calorie count of bananas:

1. United States Department of Agriculture (USDA). (n.d.). Bananas, raw. Retrieved from <https://ndb.nal.usda.gov/ndb/foods/show/2125>
2. Harvard Health Publishing. (n.d.). Bananas: A nutritious and convenient fruit. Retrieved from <https://www.health.harvard.edu/staying-healthy/bananas-a-nutritious-and-convenient-fruit>
3. American Heart Association. (n.d.). Bananas: A heart-healthy fruit. Retrieved from <https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/nutrition-basics/bananas-a-heart-healthy-fruit>