Hi .does eating mango and banana make person fat and obese

They are both good for you, I Know many people who are not Overweight and eat Mango's, Bana's and more.
I think eating too much of anything can make someone fat.

Accumulating fat is not about what specific kind of fruit you eat except to the extent that you are aware how many calories there are in a given kind of fruit and what size serving of that fruit you eat. There is a simple rule. Your body at a certain height and weight needs a certain number of calories to run efficiently. If you exceed this number of calories, you will gain weight faster or slower depending on your activity level. If you have a high activity level, you will burn more calories, and thus you can eat more. You can look up online how many calories are in each kind of fruit by portion size and determine how much of any given kind of fruit you can eat in a day to not exceed the appropriate number of calories you need to be healthy. In Asia a number of women got the idea that they would lose weight by only drinking fresh fruit juices, which are readily available on street corners in Taiwan. After imbibing huge quantities of juice, they were amazed to find that they were actually gaining weight, not realizing that they were exceeding their normal caloric intake in a given day by drinking so much fruit juice.