Hi I'm a 20 years old boy.my weight is 80 .will eating banana and mango make me fat and obese?

No, what else is your diet,
What type of exercise do you do

No it will not. Being inactive will however.

No. What makes you fat/unhealthy is meat and dairy. How many overweight horses, deers, rabbits, zebras, etc. do you see in nature? NONE. They all are eating food that they are designed to eat. Fruit and vegetables is human food, so eat up because one can never get enough! By the way, Carnivores saliva is acidic. Humans is alkaline.

Your 20 and weigh 80? My advice is you need to gain weight! And no I personaly don't think it will make you fat but don't eat the same thing everyday :)

Hope it helped!! :)

your 20 and weigh 80? my advice is you need to gain weight! And no I personaly don't think it will make you fat but don't eat the same thing everyday :)

hope it helped!!! :)

80 Kilograms is about 175 pounds.