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PubMed1986

Satiation restores brood care motivation in the female mouthbrooder Pseudocrenilabrus multicolor (Cichlidae).

The maternal mouthbrooder Pseudocrenilabrus multicolor takes up her eggs during spawning and carries them continuously in her mouth for 10-11 days at 27 degrees C. Then the young-by that time able to swim-are released from the mouth. The duration of mouthbrooding is controlled by an internal timing program in the mother [12]. In non-first-spawners brood care motivation (= readiness to take up brood into the mouth and keep it there) disappears within a few hours after brood removal. At the same time hunger-which is reduced to half of the normal level when brood care motivation is present-increases to the normal level [15]. In females without brood care motivation, satiation by food intake or by a water solution of 15 mg/l diethylpropion (an anorectic amphetamine-derivative), restores brood care motivation during a sensitive period of approximately 11 days after spawning. The point of release of adopted brood from the mouth depends on the duration of previous brood deprivation, but not on the state of brood care motivation nor on the hunger state during brood deprivation. The results suggest that above a certain level hunger inhibits brood care motivation. By contrast, the hunger state seems not to influence internal timing of mouthbrooding.

Animals↗

PubMed1988

The specificity of satiety: the influence of foods of different macronutrient content on the development of satiety.

The effects of consuming equicaloric preloads with different macronutrient contents on the development of satiety were investigated. Ten normal-weight, nondieting women fasted overnight and then rated hunger, fullness, and food preferences, and the pleasantness of the taste of food samples before and after five different preloads. The greatest changes in the pleasantness of the taste of the food occurred for the eaten food relative to the uneaten food. Macronutrient content of the preloads did not significantly influence the magnitude of these changes or the pleasantness of foods with similar nutrient contents. Therefore, no evidence of nutrient-specificity was obtained. Nutrient composition had a differential effect on hunger, fullness and food intake. Ratings of hunger decreased and fullness increased following the high starch and high protein preloads to a greater extent than after the high fat, high sucrose and mixed content preloads. When a self-selection meal was offered 2 hours after the preloads energy intake and preference for high carbohydrate and high fat food items were significantly decreased by the high protein and high starch preloads. However, no specific reduction in macronutrient intake was observed. In conclusion, differential effects of the preloads were observed in subjective ratings of hunger, fullness, preferences and subsequent food intake, but there was no indication that satiety was macronutrient-specific.

Adult↗

PubMed1990

Social facilitation of duration and size but not rate of the spontaneous meal intake of humans.

The amount eaten by humans in spontaneously ingested meals is positively correlated with the number of other people present. In order to investigate whether this social facilitation of eating was due to an increase in arousal, emotionality, hunger, or social interactions, analyses were performed on the data obtained from 82 adult humans. They were paid to maintain 7-day diaries of everything they ingested, when and where they ingested it, the number of other people present, and their subjective states of hunger, elation, and anxiety. The presence of other people was found to be associated with the duration of meals and not the rate of intake, whereas self-rated hunger was found to be associated with the rate of intake and not the duration of meals. Self-rated anxiety was not found to be associated with the number of people present, whereas self-rated elation was positively correlated with the presence of others. Multiple regression analyses suggested that the presence of other people facilitates intake and increases elation independently. It also suggested that social facilitation operates by independently increasing the size and the duration of meals and that it operates independently of the subjective state of the individual. These results contradict the predictions of increased arousal, increased hunger, and increased emotionality models but support attentional, disinhibitory, and time extension models of social facilitation.

Adolescent↗

PubMed1995

Three-factor eating questionnaire and the use and liking of sweet and fat among dieters.

The aim of this study was to examine whether the cognitive restraint, disinhibition and hunger factors of the three-factor eating questionnaire (TFEQ) can differentiate between low and high use, desired use and liking of various sugar- and fat-containing foods. A questionnaire with items on 44 foods and the TFEQ was obtained from 253 women taking part in weight reduction program. Principal component analysis was used to divide the foods into ten groups by their reported usage. The cognitive restraint factor was related to the reported use of some food groups such as fruit-based sweet foods, butter, margarine and regular-fat cheese, but not to the desired use or liking. High disinhibition and hunger scores were related to frequency of reported and desired use and to liking of several food groups (e.g., sweets, pastries served with coffee, fruit-based sweet foods, butter and margarine). Those scoring highest on cognitive restraint and lowest on disinhibition and hunger reported using all food groups less frequently than those with the lowest scores on restraint and the highest scores on disinhibition and hunger, except low-fat cheese and yogurt. These groups also differed in the desired use and liking of most sweet foods.

Adolescent↗

PubMed2006

Effect of Roux-en-Y gastric bypass on satiety and food likes: the role of genetics.

Among factors influencing the outcome of bariatric surgery may be genetics and familial risk. The purpose of this study was to assess the etiology of obesity and its impact on hunger, satiety, and food likes in obese patients undergoing Roux-en-Y gastric bypass (RYGB). This study was based on 76 patients undergoing RYGB procedures performed by a single surgeon. A previously described 100-point obesity risk index (ORI) was used to assess familial obesity risk. Hunger and satiety were assessed using a standardized Visual Analog Scale "Snickers" test, and food preferences for regular vs. low-fat potato chips were measured preoperatively and postoperatively. Patients were stratified preoperatively into high ORI (n = 34) and low ORI (n = 42) groups. Before operation, high-ORI patients preferred high-fat (regular) potato chips to low-fat (baked) potato chips, whereas the low-ORI patients liked both food types equivalently (P < 0.05). After operation (n = 43), both groups showed lower preferences for high-fat potato chips (P < 0.05 for high-ORI group). As anticipated, hunger was dramatically suppressed after RYGB. However, there was more satiety in the high-ORI group (P < 0.05, ANOVA). Most patients undergoing bariatric surgery had a strong familial or genetic component to their disease. RYGB in high-ORI patients was associated with a significant decline in preference of fatty food and a significantly prolonged drop in hunger ratings after a fast and after a standard 282 kcal meal. The success of bariatric surgery may be influenced by the etiology of obesity.

Adolescent↗

PubMedDate not supplied

Household food security among migrant and seasonal latino farmworkers in North Carolina.

OBJECTIVE: Food insecurity is defined as lack of access at all times, due to economic barriers, to enough food for an active and healthy lifestyle. The objective of this study was threefold: to characterize levels of food security, food insecurity, and hunger among migrant and seasonal Latino farmworkers; to assess predictors of food insecurity for this group; and to describe the strategies farmworkers use to cope with food insecurity. METHODS: Adults from 102 farmworker households in North Carolina responded to a survey that used a Spanish-language adaptation of the U.S. Household Food Security Survey Module and questions about sociodemographic characteristics and food behaviors. Twenty-five farmworkers participated in in-depth interviews in which they described their households' food security situation and coping strategies. RESULTS: Forty-eight of the 102 sample households (47.1%) were classified as food insecure, including 10 (9.8%) with moderate hunger and five (4.9%) with severe hunger. Households with children had a significantly higher prevalence of food insecurity than those without children (56.4% vs. 36.2%). Households with children accessed food programs such as the Special Supplemental Nutrition Program for Women, Infants and Children (WIC) that were unavailable to those without children, while those without children were more likely to access food pantries and to consume wild game or fish. Coping strategies included borrowing money, reducing food variety, and adults consuming less food to protect children from hunger. Food insecurity was more than four times as prevalent among farmworker households as among the general U.S. population. CONCLUSION: Policy changes to increase economic resources and access to federal programs are needed to decrease this food insecurity.

Adolescent↗

PubMed1999

Women's strategies to alleviate nutritional stress in a rural African society.

Many agricultural populations are subject to chronic or seasonal undernutrition, reproductive women and children often being most vulnerable. This paper presents quantitative and qualitative data on food consumption, food distribution practices, food taboos, garden sizes and work effort to show how Lese horticulturalist women living in the Ituri Forest of northeast Democratic Republic of Congo attempt to alleviate nutritional stress. The Lese experience an annual hunger season when approximately one quarter of the population suffer from energy deficiency. Nutritional intake is also compromised by a complex system of food taboos against meat from wild forest animals. Anthropometric data collected over several years suggest that Lese women suffer from nutritional stress more than men during the hunger season. They also have more food taboos particularly during pregnancy and lactation. Their low fertility is compounded by nutritional stress. Despite these inequities, Lese women use several strategies to improve their food intake. Since they are responsible for all household cooking, they manipulate food portions. During the hunger season, they snack frequently, and increase their consumption of palliative foods. Women with more food taboos plant larger gardens to supplement their diet with vegetable foods. Although this results in their consumption of more daily protein, they work harder compared to women with smaller gardens. Women cheat in their adherence to specific food taboos by actively discounting them, or by eating prophylactic plants that supposedly prevent the consequences (usually illness) of eating tabooed foods. In addition, women resort to subterfuge to access desirable resources. Lese women do not reduce work effort during the hunger season, but adapt physiologically by reducing resting metabolic rates during periods of weight loss. These results point to the ability of Lese women to minimize the ecological and cultural constraints on their nutrition. More data, however, are required to assess the long-term effectiveness of these strategies.

Adult↗

PubMed1996

Control of food intake. A physiologically complex, motivated behavioral system.

This article has examined the control of food intake as a physiologically complex, motivated behavioral system. During the past four decades, considerable progress has been made in understanding putative signals for hunger, satiation, and satiety, although hunger signals have proven to be more difficult to identify. The putative physiologic controls of food intake include positive and negative sensory feedback; gastric and intestinal distension; the effects of nutrients, nutrient reserves, and metabolism in producing signals to the liver or brain; and peptides and hormones released in the gastrointestinal tract or the brain. However, food intake is not influenced solely by physiologic signals for hunger, satiation, and satiety. To comprehend feeding behavior more thoroughly, current physiologic models must be extended to include modulating factors such as feeding-associated responses adapted through learning processes and the influence of circadian rhythms, which can be dominating over hunger, satiation, and satiety signals.

Animals↗

PubMed1996

Restrained eating among adolescents: dieters are not always bingers and bingers are not always dieters.

This study examined individual differences in the relationships among 3 constructs relevant to restrained eating theory-cognitive restraint (dieting), disinhibition (binging), and hunger. Participants were 421 adolescents (158 male, 255 female, and 8 not indicated). Comparisons among subgroups based on scores on the 3 constructs indicated that there were (a) 2 types of frequent dieters-those who follow theoretical predictions and become disinhibited and those who maintain their restraint; (b) 2 types of bingers-those who engage in dieting-induced binging and those who are hungry and disinhibited; and (c) 2 types of low-hunger eaters-those who suppress their hunger and those who eat before they experience much hunger. Implications of the results for restrained eating theory are discussed.

Adolescent↗

PubMed2001

Men gain additional psychological benefits by adding exercise to a weight-loss program.

OBJECTIVE: Adding exercise to a comprehensive weight-loss program might not only attenuate any psychological distress associated with weight-loss attempts but also may provide psychological benefits. This study examined whether a diet-plus-exercise weight-loss program improved psychological outcomes more than a diet-only weight-loss program or an assessment-only control group. RESEARCH METHODS AND PROCEDURES: This study was part of a larger 1-year randomized weight-loss trial examining the effects of diet and exercise on cardiovascular disease risk factors in 264 overweight adults. Psychological measures specific to weight control (e.g., cognitive restraint, disinhibition, hunger, and body dissatisfaction) as well as traditional measures of psychological distress (e.g., symptoms of depression, anxiety, and stress) were obtained at baseline and 1 year. RESULTS: Men and women in either weight-loss program reported greater restraint, less disinhibition, and less hunger at 1 year than those in no program. Men in the diet-plus-exercise program experienced additional increases in restraint and decreases in hunger than did men in the diet-only program. Women in the diet-plus-exercise program did not experience additional psychological benefits specific to weight control than those in the diet-only program, despite increases in aerobic capacity. DISCUSSION: The pattern seen for overweight men in the diet-plus-exercise program at 1 year-greater restraint, less disinhibition, and less hunger-is similar to the pattern seen in successful weight maintainers. These results underscore the need for innovative strategies that will enhance and sustain the pattern of psychological benefits specific to weight control associated with successful weight loss, especially for overweight women.

Adult↗

PubMed2003

Eating behaviors and indexes of body composition in men and women from the Québec family study.

OBJECTIVE: To put into relationship the dietary and anthropometric profile of men and women with their eating behaviors (cognitive dietary restraint, disinhibition, and susceptibility to hunger) and to assess whether gender and obesity status influence these associations. RESEARCH METHODS AND PROCEDURES: Anthropometric measurements (including visceral adipose tissue accumulation), dietary profile (3-day food record), and eating behaviors (Three-Factor Eating Questionnaire) were determined in a sample of 244 men and 352 women. RESULTS: Women had significantly higher cognitive dietary restraint and disinhibition scores than men (p < 0.0001). In both genders, scores for disinhibition and susceptibility to hunger, but not for cognitive dietary restraint, were higher in obese subjects than in overweight and nonobese subjects (p < 0.05). Positive correlations were observed between rigid restraint and most of the anthropometric variables studied (0.12 <or= r <or= 0.16). Moreover, in women, flexible restraint was negatively associated with body fat and waist circumference (r = -0.11). Cognitive dietary restraint and rigid restraint were positively related to BMI among nonobese women (0.19 <or= r <or= 0.20), whereas in obese men, cognitive dietary restraint and flexible restraint tended to be negatively correlated with BMI (-0.20 <or= r <or= -0.22; p = 0.10). DISCUSSION: Gender could mediate associations observed between eating behaviors and anthropometric profile. It was also found that disinhibition and susceptibility to hunger are positively associated with the level of obesity. On the other hand, cognitive dietary restraint is not consistently related to body weight and adiposity, whereas rigid and flexible restraint are oppositely associated to obesity status, which suggests that it is important to differentiate the subscales of cognitive dietary restraint. Finally, counseling aimed at coping with disinhibition and susceptibility to hunger could be of benefit for the long-term treatment of obesity.

Adipose Tissue↗

PubMed2004

The Eating Inventory and body adiposity from leanness to massive obesity: a study of 2509 adults.

OBJECTIVE: To examine how chronic dietary restraint, disinhibition, and hunger, as assessed by the Eating Inventory, vary over a broad range of BMI values from leanness to massive obesity, in subjects with family obesity. Eating Inventory factors were also studied as a function of personal weight history. RESEARCH METHODS AND PROCEDURES: Subjects were 2509 participants in a genetic study of obesity. BMIs ranged from 15 to 87 kg/m2. Six BMI groups were formed (<27, 27 to 30, 30 to 35, 35 to 40, 40 to 45, and >45). RESULTS: Multivariate analyses showed that restraint and disinhibition were significantly associated with BMI in men, whereas only disinhibition was in women. Disinhibition scores correlated strongly with hunger scores in both genders in all BMI categories; dietary restraint tended to correlate with the other two factors positively in leaner subjects and negatively in the highest BMI categories. Highly restrained normal-weight subjects were likely to exhibit disinhibition and hunger, whereas massively obese persons with very high disinhibition scores showed high hunger but little restraint. The highest restraint scores were observed in nonobese adult women with previous obesity in childhood and/or adolescence. DISCUSSION: The factor most strongly associated with BMI in this large population was disinhibition, suggesting that obesity treatment should target behaviors associated with disinhibition, especially in individuals showing a low level of dietary restraint. High restraint scores in formerly obese normal-weight women suggest that dietary restraint may exert a beneficial influence on body weight control under conditions that deserve further investigation.

Adipose Tissue↗

PubMed1998

Are high-fat and low-fat consumers distinct phenotypes? Differences in the subjective and behavioural response to energy and nutrient challenges.

OBJECTIVE: To characterise the appetite control in habitual high fat (HF) and low fat (LF) phenotypes. DESIGN: Four treatment conditions for each subject group in a fully repeated 2 x 2 x 2 measures design. SETTING: The Human Appetite Research Unit at Leeds University, Psychology Department. SUBJECTS: Eight lean HF (mean % fat intake-46.7% daily energy) and eight lean LF (mean % fat intake - 29.9% daily energy) were recruited from the staff/student population of Leeds University. INTERVENTIONS: All subjects were provided with either a low (2129 kJ) or high (3801 kJ) energy meal at midday and the capacity for compensation was later measured by nutrient challenge (ad libitum consumption of either high fat or high CHO foods). Satiation and satiety were assessed by changes in energy and nutrient intakes, hunger, fullness and food preferences. RESULTS: The energy and nutrient manipulations gave rise to different levels in the rated intensity of hunger between HF and LF (P < 0.01). HF rated their baseline hunger at a higher level than LF, and the nutrient induced changes in hunger had a much greater amplitude. HF consumed significantly more energy from the high fat meals than from the high CHO meals (P < 0.05); this effect was not observed in LF. HF ate more energy and a greater weight of the high fat foods but less energy and smaller weight of the high CHO foods than did the LF. HF rated the high fat and high CHO foods equally satisfying, tasty and filling, whereas LF indicated a preference for high CHO foods (P < 0.05). CONCLUSIONS: The appetite control in habitual high and low fat consumers is different. HF 'passively overconsume' fat whereas this effect is weak in LF. The HF ate a constant weight of food whereas LF ate a more constant level of energy. HF could not distinguish between high and low fat foods suggesting that they were intrinsically insensitive or 'taste adapted' whereas LF were fat sensitive. The clear differences disclosed in response to signals generated by the characteristics of ingested food (weight, energy, nutrient composition, taste) suggest that habitual high and low fat consumers can be regarded as distinct behavioural phenotypes. The different styles of appetite control could arise from: (a) intrinsic physiological differences, or (b) a system which is adapted to deal with a particular type of diet.

Appetite↗

PubMed2006

Using intranasal lidocaine to reduce food intake.

OBJECTIVE: Develop a dose-response curve for the effect of intranasal lidocaine on food intake. DESIGN: Healthy obese subjects had food intake, ratings of hunger, desire to eat, craving and fullness measured at lunch after an overnight fast. Four treatments were given as nose drops (0.5-0.6 ml per nostril) 5 min before the meal in a double-blind manner with a four period crossover design including a 7-day washout between periods. The treatments were saline, 2.5, 10 and 25 mg lidocaine per nostril. The order of administration was randomly assigned to each subject. Electrocardiograms, vital signs, chemistry panels, complete blood counts (CBC) and nasal inspections were carried out before and after each dose. SUBJECTS: Forty-seven subjects were screened, 34 were randomized and 20 subjects completed all four study periods in the trial. The subjects were 39+/-12.5 (s.d) years of age, had a weight of 91+/-13.0 kg, a height of 167+/-10.3 cm, 56% were women, 47% were African-American and 53% were Caucasian. MEASUREMENTS: Food intake, rating of hunger, desire to eat, craving and fullness are measures of efficacy. Adverse events, electrocardiograms, vital signs, chemistry panels, nasal inspections, CBC and physical exams are measures of safety. RESULTS: The mean reduction in food intake vs saline control in the 20 subjects completing all four study periods was 3.3+/-7% (s.d), 4.2+/-8.5% and 7.4+/-7.3% in the 2.5 mg, 10 and 25 mg per nostril groups, respectively (P=NS). Hunger and desire to eat in subjects who completed at least one study period decreased dose dependently (P<0.03, at the 25 mg per nostril dose). There were no clinically significant changes in safety measures, electrocardiograms, vital signs, chemistry panels, CBC or nasal inspections. CONCLUSION: Intranasal lidocaine reduced hunger and the desire to eat, but this did not translate into a significant reduction in food intake suggesting that intranasal lidocaine will not have value in treating obesity.

Administration, Intranasal↗

PubMed2002

Food insecurity among refugee families in East London: results of a pilot assessment.

OBJECTIVE: To identify child hunger and examine its association with family factors, receipt of benefits, housing conditions and social support among recently arrived refugee families with young children. DESIGN: Structured and semi-structured questionnaire administered to a service-based, purposive sample of caregivers. SETTING: East London, United Kingdom. SUBJECTS: Thirty households with children <5 years old, resident in the UK for <2 years. RESULTS: All households sampled were food-insecure, and 60% of index children were experiencing hunger as defined on the Radimer/Cornell scale. Child hunger was significantly associated with recent arrival, marginally significantly associated with receipt of fewer benefits and younger parenthood, and not associated with maternal education or self-efficacy score, household size or composition, or measures of social support. CONCLUSIONS: A community-based, participatory approach for rapid assessment of the prevalence, extent and causes of child hunger among newly arrived asylum seekers recently arrived in Britain is feasible, and preliminary results suggest a programmatic need for a broader, population-based assessment of food insecurity in this rapidly growing population group.

Adult↗

PubMed2005

The National Food Consumption Survey (NFCS): South Africa, 1999.

OBJECTIVE: The aim of the National Food Consumption Survey (NFCS) in South Africa was to determine the nutrient intakes and anthropometric status of children (1-9 years old), as well as factors that influence their dietary intake. DESIGN: This was a cross-sectional survey of a nationally representative sample of all children aged 1-9 years in South Africa. A nationally representative sample with provincial representation was selected using 1996 Census information. SUBJECTS: Of the 3120 children who were originally sampled data were obtained from 2894, a response rate of 93%. METHODS: The sociodemographic status of each household was assessed by a questionnaire. Dietary intake was assessed by means of a 24-hour recall and a food-frequency questionnaire from the caregivers of the children. Food purchasing practices were determined by means of a food procurement questionnaire. Hunger was assessed by a modified hunger scale questionnaire. Nutritional status was determined by means of anthropometric measurements: height, weight, head circumference and arm circumference. RESULTS: At the national level, stunting (height-for-age below minus two standard deviations (< -2SD) from the reference median) was by far the most common nutritional disorder, affecting nearly one in five children. The children least affected (17%) were those living in urban areas. Even with regard to the latter, however, children living in informal urban areas were more severely affected (20%) compared with those living in formal urban areas (16%). A similar pattern emerged for the prevalence of underweight (weight-for-age < -2SD), with one in 10 children being affected at the national level. Furthermore, one in 10 (13%) and one in four (26%) children aged 1-3 years had an energy intake less than half and less than two-thirds of their daily energy needs, respectively. For South African children as a whole, the intakes of energy, calcium, iron, zinc, selenium, vitamins A, D, C and E, riboflavin, niacin, vitamin B6 and folic acid were below two-thirds of the Recommended Dietary Allowances. At the national level, data from the 24-hour recalls indicated that the most commonly consumed food items were maize, sugar, tea, whole milk and brown bread. For South African children overall, one in two households (52%) experienced hunger, one in four (23%) were at risk of hunger and only one in four households (25%) appeared food-secure. CONCLUSION: The NFCS indicated that a large majority of households were food-insecure and that energy deficit and micronutrient deficiencies were common, resulting in a high prevalence of stunting. These results were used as motivation for the introduction of mandatory fortification in South Africa.

Anthropometry↗

PubMed2004

Glucagon-like peptide-2 inhibits antral emptying in man, but is not as potent as glucagon-like peptide-1.

BACKGROUND: GLP-1 (glucagon-like peptide-1) and GLP-2 (glucagon-like peptide-2) are released in equimolar amounts in response to meal ingestion. GLP-1 inhibits gastric emptying and reduces postprandial gastric and exocrine pancreatic secretion and may play a physiological regulatory role in controlling appetite and energy intake in humans. The role of GLP-2 is more uncertain. Based on the results of animal studies, it has been suggested that GLP-2 may induce intestinal epithelial growth and inhibit gastric motility. The aim of this study was to determine to what extent GLP-2 alone or together with GLP-1 inhibits gastric emptying and the sensation of hunger in man. METHODS: Eight healthy volunteers were tested in a double-blind, placebo-controlled fashion. Antral emptying of a liquid meal and hunger ratings were determined using ultrasound technology and visual analogue scales scoring during infusions of saline, GLP-2 (0.5, and 1.0 pmol kg body wt(-1) min(-1)), GLP-1 (0.5 pmol kg body wt(-1) min(-1)) or GLP-1 and GLP-2 (0.5 pmol kg body wt(-1) min(-1)). RESULTS: The GLP-2 infusions resulted in a dose-dependent increase in antral emptying time (35%; ns and 75%; P = 0.049) compared to saline, but GLP-2 was less potent than GLP-1, which increased the antral emptying time by 192% (P < 0.001). Addition of GLP-2 to the GLP-1 infusion did not alter the antral emptying time compared with GLP-1 alone. The GLP-1 infusion decreased the sensation of hunger compared with saline (P = 0.023), whereas the two GLP-2 infusions had no significant effect. Addition of GLP-2 to the GLP-1 infusion did not decrease the sensation of hunger further. CONCLUSIONS: Both GLP-1 and GLP-2 inhibit antral emptying in man, but GLP-1 is more potent.

Adult↗

PubMed2002

Failure to reduce short-term appetite following alcohol is independent of beliefs about the presence of alcohol.

Previously, it has been reported that energy consumed as alcohol prior to lunch does not result in subsequent reductions in voluntary food intake, and in some situations alcohol can increase subsequent appetite. The present study extends these findings by examining the effects of beliefs about alcohol content. Eighteen unrestrained men ate lunch 20 min after a preload of either water, an alcoholic beer or a non-alcoholic beer matched for energy content. Food intake was significantly less following the non-alcoholic beer than after alcohol or water, but when preload energy was included subjects had a higher overall energy intake on the day they consumed alcohol compared with both water and no-alcohol conditions. There were no significant differences in hunger or fullness ratings following the three drinks before or after the test meal, but the specific relationship between rated hunger and intake within the test meal was altered by the drink manipulation. The rate at which hunger decreased, and fullness increased, was slower after alcohol than after water or no-alcohol. The drinks did not alter the pleasantness of the test meal or increase hunger at the start of eating. When contrasted with previous work, these data confirm that alcohol consumed before lunch fails to reduce subsequent food intake, but also suggests that changes in rated appetite are influenced by beliefs about alcohol content.

Adult↗