High percent of obese people were more likely to experience mood disorder such as depression when compared with those who are not obese. Obesity may also cause poor self-image, low self-esteem & social isolation, all known will contributors to the depression. Those who are suffering with obese will also find themselves ostracized, stereotyped & discriminated against. The extra weight which carried around by the obese people may result in chronic joint pain and also some serious diseases such as diabetes & hypertension, all of which will be linked to the depression.

People who are experiencing depression were more likely to overeat or even make poor food choice, they will avoid exercising & become more sedentary. Depressed people with the decreased levels of hormone serotonin will also have a tendency toward the obesity they will tend to eat in an attempt to the self-medicate & restore the serotonin levels to the normal condition. Bariatric surgery for obesity will shed some amount of pounds, they also shed the depression.