Because he is overweight, all aspects of him will be affected. Including physical and mental effects. For example, when we were at school, some classmates were obese, and his interpersonal relationship might not be very good. People always call them fat pigs.
Others will look at that fat man with a discriminatory eye. The fatter the fat man is, the more he is discriminated against, and no one wants to make friends with him. In this view, over time, fat people will have a certain sense of inferiority. Inferiority will have many negative effects on a person, and of course it will also affect his career development.
There is a more scientific saying that obese people have poor mental activity. It also indirectly shows that the fatter a person is, the lower his IQ will be. How to become a social elite without a high IQ?