Serum cholesterol concentrations and mood states in violent psychiatric patients: an experience sampling study.

The well-documented negative association between serum cholesterol and aggressive behavior has led Kaplan to propose a cholesterol-serotonin hypothesis of aggression. According to this hypothesis, low dietary cholesterol intake leads to depressed central serotonergic activity, which itself has been reported in numerous studies of violent individuals. In the present study, 25 violent psychiatric patients participated in a microbehavioral experience sampling procedure to examine differences in self-reports of affective and cognitive experiences as a function of serum cholesterol concentrations. For 7 days, they wore signaling devices that emitted an average of seven signals a day. Following each signal, patients filled out a mood questionnaire. Total serum cholesterol (TSC) concentration was positively associated with measures of affect, cognitive efficiency, activation, and sociability, suggesting a link between low TSC and dysphoria. These findings are consistent with the cholesterol-serotonin hypothesis and with the substantive literature linking both aggression and depression to depressed central serotonergic activity.

Emotional and somatic consequences of binge episodes.

The present study investigated emotional and somatic consequences of the daily eating episodes of 19 bulimics, 15 bingers, and 20 normal control subjects. For 1 week, subjects rated 21 emotional and somatic states immediately following all eating episodes and 1 h later. Results indicated that bulimics and bingers reported significantly greater negative and somatic consequences immediately following their binge episodes than normal eaters following all of their eating episodes. For both groups, these negative emotional consequences persisted over time. Following nonbinge episodes, only bulimics reported experiencing significantly greater negative emotions than normal controls. Comparisons of the binge and nonbinge episodes of the bulimics and bingers indicated that binge episodes are followed by greater immediate and delayed negative and somatic consequences than nonbinge episodes. Furthermore, the positive emotions that occur immediately after a binge significantly decrease in intensity within 90 min after the episode. Theoretical and clinical implications of these findings are discussed.

Emotional reactivity and eating in binge eating and obesity.

The present study investigated daily mood fluctuations and moods during eating in normal and overweight binge and nonbinge eaters (N = 56) and moods during binge and nonbinge episodes of individuals who binge eat (N = 29). For 2 weeks, subjects completed the Multiple Affect Adjective Checklist each morning and continuously recorded the mood during eating and the type and quantity of food eaten during each eating episode. The results indicated that bingers experience greater fluctuations of anxiety and depression than nonbingers and overweight individuals experience greater fluctuations in anxiety, hostility, and depression than normal-weight individuals. In addition, for bingers, negative mood states are experienced during a significantly greater proportion of binge episodes than nonbinge episodes, although the intensity of the negative mood state was not related to the severity of the binge-eating episode. Theoretical and clinical implications of these findings are discussed.

The topography of binge eating.

The present study investigated the topography of binge eating by comparing characteristics of eating episodes recorded by individuals who engage in binge eating (n = 29) with those who do not (n = 27), and characteristics of binge and non-binge episodes recorded by individuals who binge eat. For 2 weeks, subjects continuously recorded the type and quantity of food eaten during each eating episode, time and place of consumption, number of persons present, mood while eating, and whether the food eaten was part of a meal or snack. Results indicated binge eaters experienced negative moods during a significantly greater proportion of their eating episodes than non-binge eaters. Within the group of binge eaters, negative moods were experienced during a significantly greater proportion of binge episodes than non-binge episodes. Furthermore, binge episodes occurred significantly more often than non-binge episodes from 6:00 to 12:00 p.m. and significantly less often at appropriate places. Clinical implications of these findings are discussed.