... Of the fiftythree studies, ten trials were carried out on healthy participants (53,55,58,62,64,67,94,(101)(102)(103) , twenty-five trials were carried out in depressed populations (39,41,(43)(44)(45)49,51,56,65,66,70,73,76,(79)(80)(81)87,88,90,92,93,96,98,99,105) , one study in Alzheimer's disease patients (38) , two in participants with borderline personality disorder (40,104) , one in those with stress (42) , one in patients with myocardial infarction (57,60) , one in patients with selfharm experience (61) , one in those with mild cognitive impairment (69) , one in those with psychological distress (71) , one in people at risk for psychotic disorders (77) , two in those with bipolar disorders (78,79) , one in those with schizophrenia (82) , two in patients with Parkinson's disease (83,89) , one in patients with ischemic stroke (84) , one in women with premenstrual syndrome (95) and one those with cognitive decline (103) . Twelve trials had a low risk of bias (39,41,42,58,66,70,71,74,77,83,89,101) , sixteen trials were rated to have some concerns (46,53,55,65,76,78,79,81,82,84,90,(92)(93)(94)98,102,103) and the other twenty-five trials considered to have a high risk of bias (38,40,(43)(44)(45)48,49,51,56,57,(60)(61)(62)64,67,69,73,80,87,88,95,96,99,104) . In total, twenty trials were carried out in populations with overweight or obesity (BMI ≥ 25 kg/m 2 ) (38,(41)(42)(43)45,48,57,58,(65)(66)(67)69,71,84,94,98,99,101) , eight trials were conducted in participants with normal weight (18 < BMI < 25 kg/m 2 ) (39,61,62,64,81,89,90,95) and the other twenty-seven trials did not report the weight status of the participants (40,49,51,53,55,56,60,67,70,73,74,(76)(77)(78)(79)(80)82,83,87,88,92,93,96,(102)(103)(104)(105) . ...