Suicide and body mass index Epidemiology of suicide

risk of suicide decreases increased body mass index in united states.

risk of suicide may decrease increased weight , low in obese persons. connection not understood, hypothesized elevated body weight results in higher circulating levels of tryptophan, serotonin, , leptin, in turn reduces impulsivity.

however, other studies indicate suicide rates increase extreme obesity, , difficult control conflating factors such bmi-related differences in longevity, have significant bearing on suicide rates.