Green bananas can offer health benefits. Most people eat bananas when the fruit is yellow and ripe, but green unripe bananas are also safe to eat.
Green bananas are less sweet and more firm than yellow bananas. They also have a wax-like texture that some people don’t enjoy.
They are high in many nutrients, including potassium, Vitamin B6, and Vitamin C but still consist almost entirely of carbs with very little protein and fat.
Green bananas also contain a high amount of resistant starch and pectin, which have been linked to several benefits like improved blood sugar control and digestive health.
They may also have an appetite-reducing effect due to their high content of fibre and resistant starch. (Source: healthline)
Caution: Green bananas may cause digestive problems for some people. People with a latex allergy should also avoid them.