Methods for regulating food intake in a human subject; for improving a compliance of a human subject to caloric restriction; and for reducing a desire of a human subject to consume fats, utilizing H.sub.1-receptor agonists that have a pharmacological half-life that allows an efficient treatment regime thereof are disclosed. The methods can be efficiently used for treating conditions such as overeating, overweight, obesity, binge eating disorder, night eating syndrome, obsessive eating, compulsive eating and bulimia, as well as conditions associated with metabolic derangement such as dyslipidemia.