A tendency towards a decrease in plasma leptin levels in patients with psychosis from the baseline (M = 9.56, SD = ±9.68), to the end of the program (M = 12.11, SD = ±10.51), [t(2) = −3.32, p = .080], was observed in addition to a slight (not significant) change in glucose from T0 (M = 5.24, SD = ±.400) to T1 (M = 4.90, SD = ±.707), [t(6) = 2.16, p = .074]. The gene discussed is LEP; the disease is psychotic disorder.