Bipolar disorder or manic-depressive illness is a term coined for complex mental behaviors that include unusual shifts in mood, daily routine, energy utilization, intense emotion, and concentration. Obese individuals present a risk of developing these conditions mildly or at an extreme level. If these symptoms sustain for a more extended period, it turns into a critical psychological state that may also lead to schizophrenia. Bipolar disorder may lead to other mental disorders related to obesity as well.