Is the brain to be blamed for Obesity?

This is one of the most prominent questions - What causes obesity? Average Joe may reply, "poor diet & lack of physical exercise". However, it has a lot to do with behavioural, physiological & personality traits. It is a well known fact that obesity is associated with a person's tendency to face negative emotions. It is also connected with poor executive function - lack of ability to plan, pay attention & inhibit impulsive behaviours while performing a work.