Chronic stress increases impulsivity through its effects on the hypothalamic-pituitary-adrenal axis and dopamine levels in the brain. Stress leads to increased glucocorticoid release which can cause degeneration of dopaminergic neurons, lowering dopamine activity and increasing impulsivity. Impulsivity is positively associated with excessive food intake and obesity. Low dopamine states linked to chronic stress may impair brain reward pathways and make individuals more susceptible to obesity through increased food impulsivity and intake.