Why are there many FAT people in the world?

because of the food they are eating..junks, pastas, fatty foods, instead of eating a well balanced diet... and somehow with our daily routines and work that making us stress, with the pollutants that we inhale everyday will make our body system difficult to lose excess weight.and as per observation man when depressed tremendously losed weight while woman when depressed they got obese. i have interviewed a lot of girls who before was sexy and well buld but they became obese because of boredom and depression....

Just because they don't have contol on their diet. just because they are so lazy to move about.....I mean to say that sedentary lifestyle and junk food is the main cause of obesity all over the world. Besides this there are various physiologial as well as pathlogical disorders accounting for obesity , but their contribution us far less than these 2 causes.

The same reason that there are so many skinny people in the world. People that are skinny because of anorexia and things of that nature. There's alwasy gonna be fat people as well as skinny people and healthy people. You are I can't do anything about either. That's life.