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PubMed1996

Influences of gender, amount of food, and speed of eating on external raters' perceptions of binge eating.

Traditional methods for examining binge-eating (e.g. food diaries, laboratory binges), primarily employing clinical samples, have a number of limitations. This paper details three studies utilizing a new methodology to examine perceptions of binge eating: standard videotapes of male and female models consuming doughnuts. College students (n = 459) viewed one of nine videotapes and were asked if the eating behavior of the model was a binge or not. Variables manipulated include gender of the model, number of doughnuts, rate of eating and social (vs. solitary) eating. The number of doughnuts eaten by a female model was sufficient for female subjects to label it as a binge. In order for a male to have binged, females responded to the amount; males required both speed and amount. Results are discussed in terms of their relevance for understanding perception of binge eating in normal and clinical populations.

Adolescent↗
PubMed1991

Cognitive-behavioral treatment with and without response prevention for bulimia.

We compared cognitive-behavior therapy (CBT) with and without exposure and response prevention (ERP) in the treatment of eating disorder patients who both binged and purged, and reported abnormal attitudes concerning body weight and shape. Both treatments produced significant and comparable reductions in binge-eating and purging, eating patterns, and attitudes about weight and shape at posttreatment. Treatment effects were generalized to improvements in different measures of general psychopathology, and were maintained over follow-ups of 3 and 12 months. The findings are consistent with prior research showing that CBT is an effective treatment for patients with the core features of bulimia nervosa. Furthermore, the data suggest that the addition of in-session exposure and response prevention does not enhance the effectiveness of the basic CBT program.

Adult↗
PubMed1985

The prevalence of binge-eating and bulimia in 1063 college students.

We used a purpose-designed questionnaire to survey the prevalence of binge-eating and bulimia in a sample of 1063 Dublin third-level students aged 17-25 yr. There were 361 males and 701 females. The questionnaire was based on DSM-III, and included a written definition of a binge and cross-check questions. Although 17.7% of males and 37% of females claimed to have had an eating binge, cross-check items reduced this to 1.1% of males and 10.8% of females who met the DSM-III definition. No male and only 7.7% of females also met the behavioural criteria under item B of DSM-III, and only 5% of females reported dysphoric mood. Excluding those experiencing fewer than one episode per week gave a prevalence of 2.8% in females and 0% on males. Previously-reported prevalences using questionnaire may be inflated due to poor respondent understanding of the psychiatric terms being used.

Adult↗
PubMed1987

Taste and bulimia.

Binge-eating episodes in bulimia often involve sweet or fat-containing foods. Sensory perceptions and preferences for sweetness and fat content were examined in 16 normal-weight women with a diagnosis of DSM IIIR bulimia and in 16 normal-weight volunteer controls. Taste stimuli were 15 semi-liquid mixtures of dessert-type soft white cheese ("fromage blanc") containing 0, 3 or 7 grams of fat per 100 g, and sweetened with 1, 5, 10, 20, or 40% sucrose (wt./wt.). The subjects used 9-point category scales to rate the perceived sweetness and fat content of the stimuli, and assigned a pleasantness (hedonic) rating to each sample. Taste preferences were modelled using the Response Surface Method (RSM). Mean estimates of sweetness intensity and fat content were generally similar for bulimic patients and controls. In contrast, profiles of taste preference differed significantly between groups. Optimal stimulus sweetness was 15% sucrose wt./wt. for bulimic patients and only 9% for controls, while optimal fat levels were lower for bulimic patients relative to controls. The present data are consistent with previous reports that patients with eating disorders crave sweetness but show reduced sensory preferences for fat-containing foods.

Adult↗
PubMed1998

The effect of hypothalamic peptide YY on hippocampal acetylcholine release in vivo: implications for limbic function in binge-eating behavior.

Central injection of peptide YY (PYY) in sated rats produces the most powerful stimulating effect of food intake known to date. The neural mechanisms by which PYY regulates appetite are not clear but may be important because abnormal levels of PYY have been implicated in the neurobiology of bulimia nervosa. Interactions between brain acetylcholine (ACh) and PYY had not been studied. Therefore, the present experiments were designed to explore the in vivo release of ACh from the hippocampus (HPC) of rats in response to hypothalamic infusion of PYY. Hippocampal ACh release was found to increase 400% in response to 10 microg PYY. In a separate experiment, blockade of the same area of the HPC with bilateral intracerebral injections of 3.5 microg scopolamine did not affect intake stimulated by intrahypothalamic injection of 4 microg PYY. Furthermore, a third experiment showed, for the first time, that PYY (2.5-10.0 microg) can elicit robust feeding when infused directly into the HPC. The significance of these findings to the activation of limbic functions such as memory, reinforcement, and obsessional processes that accompany human binge-eating syndromes is discussed.

Acetylcholine↗
PubMed1984

Binge-eating, self-induced vomiting and laxative abuse: a community study.

Following a television documentary on bulimia nervosa, people who thought that they had this type of eating problem were asked to complete a confidential questionnaire. 579 women who fulfilled self-report diagnostic criteria for bulimia nervosa were thereby identified. These women closely resembled patients with bulimia nervosa, although the age range was wider. They had grossly disturbed eating habits and almost half vomited at least daily. Laxative abuse was also common. Although almost two-thirds had been overweight in the past, the majority had a weight within the normal range. A minority had previously fulfilled diagnostic criteria for anorexia nervosa. On standardized measures, these women had abnormal attitudes to their weight and shape, as well as significant levels of psychiatric symptomatology. Nearly three-quarters thought that they definitely needed professional help, yet only a third had ever been referred for psychiatric treatment. Using data from this sample and an independent sample of 499 probable bulimia nervosa cases, the significance of three issues relating to the diagnosis of bulimia nervosa were examined: laxative abuse, the frequency of self-induced vomiting, and a history of anorexia nervosa.

Adult↗
PubMed1998

Psychological symptoms in individuals successful at long-term maintenance of weight loss.

Set point theory suggests that successful maintenance of weight loss ("weight suppression") may be associated with psychological distress. This study examined the association between psychological symptoms and body weight suppression by using a registry of 629 women and 155 men who lost at least 13.6 kg (mean loss = 30 +/- 15 kg) and maintained the loss for at least 1 year (mean duration = 5.5 +/- 6.8 years). Participants completed measures of mood, distress, restraint, disinhibition, bingeing, and purging. Maintainers' levels of distress and depression were lower than those of psychiatric samples and resembled those of community-based samples. Binge-eating and purging rates were comparable to rates of community samples. Maintainers' levels of restraint and disinhibition were markedly different from those of eating-disordered samples, resembling levels found in patients recently treated for obesity. There was no evidence that long-term suppression of body weight is associated with psychological distress.

Adaptation, Psychological↗
PubMed1997

Serum leptin and short-term regulation of eating in obese women.

1. Leptin is generally thought to play a key role in the regulation of eating. However, its real role in human eating behaviour is still poorly known. Therefore, the role of leptin in the regulation of eating was examined in obese binge- and non-binge-eating women during exposure to food and food-related stimuli. 2. Eleven binge- and ten non-binge-eating obese women took part in the study. In addition to serum leptin, serum insulin, non-esterified fatty acids, plasma glucose, salivation, the feeling of hunger and the desire to eat were repeatedly measured during the experiment. 3. Serum leptin levels did not differ between the binge- and non-binge-eating women. Neither were leptin levels associated with the feeling of hunger or the desire to eat food, nor with the amount or composition of food eaten. During food exposure leptin levels did not change, whereas at the same time serum insulin levels increased and serum non-esterified fatty acid levels decreased. The change in salivation during food exposure was inversely associated with the fasting leptin level. 4. This study indicates that serum leptin does not play a role in the regulation of eating in obese women, at least not in the short term. Furthermore, leptin levels are not different in obese binge-eating women as compared with obese non-binge-eating women. Interestingly, high fasting leptin levels may be associated with a decreased salivation response in the presence of food and food-related stimuli.

Adult↗
PubMedDate not supplied

Changes in cerebral blood flow in bulimia nervosa.

Bulimia nervosa is an eating disorder of which characterized psychopathological symptoms are a recurrent episode of binge eating. The changes in cerebral blood flow (CBF) in a patient with bulimia nervosa between his or her different eating phases are presented. CBF was measured quantitatively by means of single photon emission computed tomography using I-123 N-isopropyl-p-iodoamphetamine. CBF of the global brain during a binge-eating phase was higher than that during an anorexic state phase. In the anorexic state, the CBF in the temporal, parietal, and occipital lobes on the right side was lower than that on the left side. In the binge-eating state, a lack of laterality between the right and left cerebral hemispheres was found. This finding suggests that cerebral activity differs between the two phases, and that asymmetry is dependent of the eating state.

Adult↗
PubMed1990

Bulimia nervosa in overweight individuals.

Patients who have bulimia nervosa and are overweight have received little attention in the medical literature. The authors identified 25 patients who weighed greater than or equal to 130% of their ideal body weight out of a series of 591 patients with bulimia nervosa. This subgroup was contrasted with a sample of 25 patients with bulimia nervosa who were 90% to 110% of their ideal body weight. Members of the overweight bulimia nervosa group were binge-eating and vomiting less frequently than the comparison group but were more likely to be abusing laxatives, and to report a history of self-injurious behavior and suicide attempt(s). Both groups reported frequent binge-eating.

Body Weight↗
PubMed1998

Caloric intake patterns of nonpurge binge-eating women.

Daily caloric intake of nonpurge binge-eating women was monitored over 28 days using food diaries to determine how caloric intake patterns were related to binge eating. The majority of participants had extreme fluctuations in daily caloric intake. Caloric intake for both nonbinge days and days preceding the highest-calorie binge days was significantly lower than caloric intake on binge days and highest-calorie binge days. The lower caloric intake was not low enough to cause physiological deprivation. Although there was not physiological deprivation of calories, the individual may have felt that she ate less than desired, which may have contributed to subsequent binge eating.

Adult↗
PubMed1983

Binge-eating and self-induced vomiting in the community. A preliminary study.

This study examined by questionnaire the prevalence of binge-eating and self-induced vomiting among a sample of 369 consecutive attenders at a family planning clinic. 20.9 per cent reported current episodes of uncontrollable and excessive eating ('binges'), 2.9 per cent currently induced vomiting as a means of weight control; and 4.9 per cent reported using laxatives. Binge-eating and self-induced vomiting were strongly associated with disturbed attitudes to food, eating, body weight and shape; and with psychiatric disturbance. Menstrual dysfunction was not associated with either body weight or binge-eating; it was however associated with psychiatric state. Applying conservative rules, 1.9 per cent appeared to fulfil diagnostic criteria for the recently described syndrome bulimia nervosa.

Adolescent↗
PubMed1984

Mood changes in bulimia nervosa.

Daily measurement of mood, and the occurrence of specific eating behaviours, were assessed concurrently over an eight-week period in a sample of 50 patients meeting diagnostic criteria for bulimia nervosa. Results of observer-rated scales of mood showed a significant reduction of scores, whereas self-assessment of mood showed no change over the study period. Negative mood states, although not severe, were more marked when the specific behavioural symptoms of binge-eating, vomiting, or purging occurred, and they increased as abnormal eating behaviours accumulated. It is suggested that the accompanying dysphoric mood states of bulimia nervosa are likely to be a secondary manifestation related to the presence of abnormal eating symptoms, and that they do no constitute a primary depressive illness.

Adolescent↗
PubMed1998

Eating disorders and the cultural forces behind the drive for thinness: are African American women really protected?

Responding to mainstream ideals of female beauty, many women and girls view thinness as a requirement for feeling acceptable to themselves and to others. The drive to be thin can lead to problematic eating patterns, such as self-starvation, binge-eating, and purging, symptoms of the eating disorders, anorexia and bulimia nervosa. Most current literature on eating disorders and the drive for thinness focuses only on White middle-class women and girls. African American females have been largely excluded from studies, due to the assumption that the Black community's acceptance of women with fuller shapes protects its women from eating problems. However, recent studies are beginning to show that race, class, and exposure to a dominant culture which denigrates Black features and physiques impact body image among Black women and may play a role in the development of eating problems.

Adolescent↗
PubMed1988

High-risk situations for engaging in substance abuse and binge-eating behaviors.

Self-reports of high-risk events, situations and experiences associated with substance abuse and binge-eating behaviors were examined in a sample of hospitalized patients being treated for both problems. The question being posed in the present study is: Are the high-risk situations for heavy drinking and binge eating similar or different? Results suggest some similarities in the intensity of specific high-risk situations as represented by questionnaire subscale scores, for both of the problem behaviors, but they point to interesting differences as well. The hierarchical importance of the high-risk situations for the two behaviors were markedly different.

Adult↗
PubMed1988

Eating disorders in a nonclinical adolescent population: implications for treatment.

The present study investigates the prevalence of adolescent eating disorders across gender, cultural groupings, and socioeconomic status. The Eating Attitudes Test, the Binge-Eating Questionnaire, and a demographic questionnaire were administered to students at two high schools. The results indicate a high rate of eating disorders in a nonclinical adolescent population. The rates for binge eating are comparable to those found in studies of college students--found at a younger age. With regard to SES, cross-cultural and gender findings, it is clear that eating disorders cross socioeconomic class and ethnic groups, and have a higher rate of occurrence in males than previously reported. Given such high rates of eating problems in a nonclinical population, the issue of prevention and early detection must be addressed. Additionally, more specific information on male eating disorders is needed.

Adolescent↗
PubMed1985

Does laxative abuse control body weight? A comparative study of purging and vomiting bulimics.

This study examines the daily food intake and eating habits of 30 bulimia nervosa patients of normal weight; 20 vomited daily and 10 purged daily. The aim was to measure and compare food intakes and to examine the belief that laxative abuse is an effective means of controlling body weight. The results indicate that the purgers control their weight by overall dietary restraint, not by the pharmacological action of the laxatives. The purgers' eating patterns were bulimic, but not gross: mean daily energy intake being in a normal range (2210 +/- 210 kcal/day). Binge-eating by the vomiters was of a different order: mean energy intake was very large (6025 kcal/day), nearly three times that recommended and significantly greater (P less than 0.01) than that eaten by the purgers. There was major daily variation (s.d. = 3605) and, on occasions, huge amounts were recorded, up to 30 000 kcal in a day. Despite this, vomiting was highly effective in preventing weight gain, the mean weights of the vomiters being similar (mean = 98 per cent) to their matched population mean weight (MPMW). In contrast, purging was relatively ineffective, for despite smaller energy intakes, all the purgers were above (mean = 114 per cent)--and some markedly above--their MPMW. This difference between the two groups was significant (P less than 0.01). Reasons for persisting with laxative abuse are discussed.

Adolescent↗