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PubMed1977

Food intake controls in the suckling pig: glucoprivation and gastrointestinal factors.

The energy balance of suckling Yorkshire pigs 1 day to 2 wk old was challenged by: food deprivation, glucoprivation, and caloric and noncaloric gastric loads delivered by intubation. tafter 2--4 h fasts, food intake greatly increased over nonfasted control intake during a 3-h refeeding period. This response occurred both when body weight gain was used as a measure of intake for pigs nursing on the sow and when intake was measured directly in bottle-fed pigs. Glucoprivation produced by 0.5--2 U/kg insulin did not stimulate food intake although plasma glucose fell to a mean of 49 mg/100 ml (43% of control) after 1 U/kg insulin. Gastric loads of water or 3% NACl depressed intake after 3-h fast, but 0.9% NaCl did not. All the caloric gastric loads depressed intake; in order of increasing effectiveness, they were: heavy cream, protein hydrolysate, corn oil, milk, 5% glucose, and 5% lactose. The carbohydrate loads were most effective, a result which indicates that the response was not to calories alone but to some specific nutrient, possibly glucose.

Animals↗
PubMed1999

Reduced glucose availability attenuates circadian responses to light in mice.

To test whether circadian responses to light are modulated by decreased glucose availability, we analyzed photic phase resetting of the circadian rhythm of locomotor activity in mice exposed to four metabolic challenges: 1) blockade of glucose utilization induced by 2-deoxy-D-glucose (2-DG), 2) fasting (food was removed for 30 h), 3) insulin administration, and 4) insulin treatment after fasting. In mice housed in constant darkness, light pulses applied during early subjective night induced phase delays of the rhythm of locomotor activity, whereas light pulses applied during late subjective night caused phase advances. There was an overall reduction of light-induced phase shifts, with a more pronounced effect for delays, in mice pretreated with 500 mg/kg ip 2-DG compared with mice injected with saline. Administration of glucose with 2-DG prevented the reduction of light-induced phase delays. Furthermore, phase delays were reduced in fed mice pretreated with 5 IU/kg sc insulin and in fasted mice injected with saline or insulin compared with control fed mice. These results show that circadian responses to light are reduced when brain glucose availability is decreased, suggesting a metabolic modulation of light-induced phase shifts.

Animals↗
PubMed2006

When children eat what they watch: impact of television viewing on dietary intake in youth.

OBJECTIVES: To test whether increased television viewing is associated with increased total energy intake and with increased consumption of foods commonly advertised on television, and to test whether increased consumption of these foods mediates the relationship between television viewing and total energy intake. DESIGN: Prospective observational study with baseline (fall 1995) and follow-up (spring 1997) measures of youth diet, physical activity, and television viewing. We used food advertising data to identify 6 food groups for study (sweet baked snacks, candy, fried potatoes, main courses commonly served as fast food, salty snacks, and sugar-sweetened beverages). SETTING AND PARTICIPANTS: Five public schools in 4 communities near Boston. The sample included 548 students (mean age at baseline, 11.70 years; 48.4% female; and 63.5% white). MAIN OUTCOME MEASURES: Change in total energy intake and intake of foods commonly advertised on television from baseline to follow-up. RESULTS: After adjusting for baseline covariates, each hour increase in television viewing was associated with an additional 167 kcal/d (95% confidence interval, 136-198 kcal/d; P<.001) and with increases in the consumption of foods commonly advertised on television. Including changes in intakes of these foods in regression models provided evidence of their mediating role, diminishing or rendering nonsignificant the associations between change in television viewing and change in total energy intake. CONCLUSIONS: Increases in television viewing are associated with increased calorie intake among youth. This association is mediated by increasing consumption of calorie-dense low-nutrient foods frequently advertised on television.

Advertising↗
PubMed2004

Coordinated school health program and dietetics professionals: partners in promoting healthful eating.

Although research indicates that school meal programs contribute to improved academic performance and healthier eating behaviors for students who participate, fewer than 60% of students choose the National School Lunch Program or School Breakfast Program. School meal programs have a difficult time competing with foods that are marketed to young people through sophisticated advertising campaigns. Youth's preferences for fast foods, soft drinks, and salty snacks; mixed messages sent by school personnel; school food preparation and serving space limitations; inadequate meal periods; and lack of education standards for school foodservice directors challenge school meal programs as well. A coordinated school health program offers a framework for meeting these challenges and provides children and adolescents with the knowledge and skills necessary for healthful eating. This article identifies challenges facing school foodservice directors in delivering healthful meals and acquaints dietetics professionals with the coordinated school health program to be used as a tool for addressing unhealthful weight gain and promoting healthful eating.

Advertising↗
PubMed2002

[Lipid and lipoprotein profile of Chinese immigrants living in Costa Rica].

The lipid profile and food pattern of 50 Chinese immigrants living in San José, Costa Rica were studied during 1999. The results showed that 35% of the immigrants had high levels of total cholesterol (> or = 5.16 mmol/L) and 51% had high concentrations of LDL-Cholesterol (> or = 2.84 mmol/L). Moreover, 36% of them had high levels of triglycerides (> 1.69 mmol/L) and only the 15% had low concentrations of HDL-cholesterol (< or = 0.90 mmol/L). The ratio of men with high levels of total cholesterol, LDL-cholesterol and triglycerides and low levels of HDL-cholesterol was larger that the one in women; although this difference was not significant. 41% of the studied population presented Castelli's Indexes (TC/HDL-C) above 4.5. In general, around 80% of the Chinese immigrants consume vegetables 5-6 times/week and 50% consume fruits with the same frequency. A high percentage of the immigrants eat food with animal protein more than 3 times/week and around 23% eat frequently snacks and fast foods. Our data suggest that the Chinese immigrants still keep some characteristics of their nutritional culture. Nevertheless, they have changed their food pattern to a more atherogenic one. It's important that nutritionists and other health professionals evaluate in detail the factors associated with the change in the food pattern of the immigrants, in order to avoid an increase in the rates of morbi-mortality of coronary disease in this group of population.

Adult↗
PubMed1985

Unconventional eating practices and their health implications.

The authors discuss a number of unconventional or faddist foods and eating practices and their health implications. Among the topics included are vegetarianism, Zen macrobiotic diets, fast foods, junk foods, megavitamins and their toxicity, health foods, fad diets in infancy, and elimination diets.

Adolescent↗
PubMed2005

Technological developments and the need for technical competencies in food services.

The growing scale of institutional and commercial food services poses a technological challenge of producing large quantities of high quality meals in terms of their safety, sensory and nutritional attributes. Developments in food service technology and systems (cook-freeze, cook-chill and others) allow the replacement of fast food with the service of cooked meals, which are often nutritionally superior. Reliance on equipment, packaging and technological 'know-how' makes food service operations more complex. Operators have to minimise the impact of the numerous steps in the production process, the fundamental weaknesses of cook-chill food safety design, coupled with the practical limitations of Hazard Analysis Critical Control Points management, the potential unevenness of temperature distribution and product deterioration during storage. The fundamental knowledge of food science and microbiology, engineering and packaging technologies is needed. At present, the 'high tech' options, which can improve a product's nutritional value, such as natural preservation hurdles or functional meals, are not used in practice.

Cooking↗
PubMed2001

Post-prandial decrease of circulating human ghrelin levels.

Ghrelin, an endogenous ligand of the GH secretagogue-receptor, has recently been shown to stimulate GH secretion and to have orexigenic and adipogenic effects in rodents, but little is known about its regulation and biological function in humans. Gastric motor function is under control of the central nervous system; however, the afferent and efferent loops of this feedback control mechanism remain to be elucidated. In the study presented here we investigated the effect of nutrient intake on circulating human ghrelin levels, and a possible association between ghrelin levels and gastric emptying. Ten healthy volunteers received a standard meal after an overnight fast. Food intake significantly decreased plasma ghrelin levels from 248.5 +/- 15.0 to 179.5 +/- 17.9 fmol/ml (120 min after meal, p=0.047). Gastric emptying half-time (non-invasive 13C-octanoic acid breath test) was correlated with fasting plasma ghrelin levels (r=0.74, p=0.0013). Ghrelin appears to be one possible candidate to provide feedback signaling between nutrient intake, gastric motor function and the central nervous system.

Adult↗
PubMed2006

A content analysis of health and physical activity messages marketed to African American children during after-school television programming.

OBJECTIVE: To examine the number of food advertisements African American children are exposed to during children's television programming aired on predominantly African American and general television stations. DESIGN: A content analysis was conducted to identify and analyze the health-related content (HRC) and physical activity-related content (PARC) of food advertisements shown during children's television programming. SETTING: Three sets of television advertisements from 3 stations (Black Entertainment Television, The WB [Warner Bros], and Disney Channel) served as the sample during a 1-week period in July 2005 (July 11-15), from 3 pm to 9 pm. RESULTS: In total, 1098 advertisements were recorded, with 256 food and beverage commercials used for this study. Results indicate that 36.3% of all commercials were based on fast food restaurants, 31.3% were for drinks, 16.8% were for candy, 13.7% were for cereals, and 2.0% were for snacks (percentages do not total 100 because of rounding). Compared with The WB and Disney Channel, Black Entertainment Television had significantly (P=.001) more food and beverage advertisements. Few HRC or PARC advertisements were shown. Of 256 food and beverage commercials, only 8.2% contained HRC and 9.4% had PARC. Also, the HRC and PARC scenes contained messages that were implied vs explicitly talking about the health or physical benefits of the product. CONCLUSIONS: African American children are overexposed to numerous types of food and beverage advertisements. These advertisements do not provide an adequate level of positive HRC and PARC messages. Consequently, the messages that are portrayed may undermine efforts to teach African American children about the importance of healthy living and physical activity.

Adolescent↗
PubMed2001

Implementation of a primary care physician network obesity management program.

Most primary care physicians do not treat obesity, citing lack of time, resources, insurance reimbursement, and knowledge of effective interventions as significant barriers. To address this need, a 10-minute intervention delivered by the primary care physician was coupled with individual dietary counseling sessions delivered by a registered dietitian via telephone with an automated calling system (House-Calls, Mobile, AL). Patients were seen for follow-up by their physician at weeks 4, 12, 24, 36 and 52. A total of 252 patients (202 women and 50 men) were referred by 18 primary care physicians to the program. The comorbid conditions reported for all patients at baseline included low back pain, 29% (n = 72); hypertension, 45% (n = 113); hypercholesterolemia, 41% (n = 104); type 2 diabetes, 10% (n = 26); and sleep apnea, 5% (n = 12). When offered a choice of meal plans based on foods or meal replacements, two-thirds of patients (n = 166) chose to use meal replacements (Ultra Slim-Fast; Slim-Fast Foods Co., West Palm Beach, FL) at least once daily. Baseline weights of subjects averaged 200 +/- 46 lb for women (n = 202) and 237 +/- 45 lb for men (n = 50). Patients completing 6 months in the program lost an average of 19.0 +/- 4.0 lb for women (n = 94) and 15.5 +/- 8.2 lb for men (n = 26). Physicians reported a high degree of satisfaction with the program, suggesting that a brief, effective physician-directed program with nutritionist support by telephone can be implemented in a busy primary care office.

Back Pain↗
PubMed2006

Nutritional supplements in pregnancy: commercial push or evidence based?

PURPOSE OF REVIEW: This review examines whether nutritional supplements during pregnancy have a role to play in the health of the mother, outcome of pregnancy or health of the baby. It will put into context the increased use of nutritional supplements in pregnancy and whether there is an evidence base for this supplementation. RECENT FINDINGS: Women are not consuming enough nutrients from their diet alone and food is depleted in many important minerals. There is increasing support that supplementation of specific vitamins, minerals and omega-3 fatty acids can have a positive impact on maternal health in terms of prevention of preeclampsia, miscarriage, preterm birth, low birthweight, gestational diabetes and also on the long-term health of the baby. There are some contradictory findings with antioxidants and prevention of preeclampsia, and these are discussed. SUMMARY: With soil depletion, overfarming and transportation of foods over hundreds of miles with loss of nutrients en route, together with the increased use of convenience and fast foods, women can be over-fed, but under-nourished in our modern society. These can lead to nutrient deficiencies which can have an impact on the outcome of pregnancy. Evidence shows that supplementation can play a valuable role in the health of the pregnant mother and her baby. Emphasis must always be on eating a good diet, but given the limitations of the 21st century lifestyle and the nutritional content of food, good quality nutritional supplements should be used during pregnancy in combinations rather than isolated single nutrients.

Antioxidants↗
PubMed2006

[Enteroparasitosis prevalence in food handlers, Florianópolis, SC].

We analyzed 238 feces samples in two populations of individuals in the city of Florianópolis, Santa Catarina State, Brazil: we selected workers in a fast food company and workers in street markets and vegetable and fruit markets. The intestinal parasites were high in these food handlers.

Animals↗
PubMed2005

[Relationship between intestinal parasites in food handlers and epidemiological factors in the city of Florianópolis, Santa Catarina, Brazil].

The presence of intestinal parasites and epidemiological aspects were evaluated in 238 workers from a fast food company and other individuals working in street markets and farmers' produce markets in the city of Florianópolis, Santa Catarina State, Brazil. Parasitological techniques used in this study were: Lutz, Baermann-Moraes, Graham, and Faust, and parasite infection rates were 42.85% and 47.06%, respectively. Socioeconomic factors such as income distribution, schooling, and occupational categories proved to be relevant in this context. Habitual daily intake of fruits and vegetables was the factor most heavily associated with infection. These data suggest that intestinal parasites are frequent among food handlers in this city and that there is a need for constant epidemiological surveillance through periodic parasitological tests and health education for this entire population segment.

Adolescent↗
PubMedDate not supplied

[Street food among children: a study in north Tunisia].

As urbanization increases in Tunisia, eating meals outside the home is becoming more frequent. Children are prime consumers for the fast food sold in the streets. Neither their nor their parents' attitude towards street food is well documented as yet. This study was conducted in the city of Bizerte in February 1998. Its aim was to gather information about street food and parents' and children's attitudes towards it to help organize educational sessions with the children, parents, teachers, and vendors. The study interviewed 421 primary school children, ranging in age from 6 to 15 years (mean age: 10 years), from 24 schools. Half received pocket money, a percentage that did not differ by sex. Three quarters of the children used more than 75% of their pocket money to buy street food. The items bought most frequently were candy (27.2%), sandwiches (23.9%), pastries (23.9%), sunflower seeds and peanuts (21%), and either pizza, chocolate, or cheese (20.3%); the largest proportion of money was spent on sandwiches. In more than half the cases (55.7% of the children), the main motivation for buying street food was either to replace or fill out a meal at home, with sandwiches or pastries. The parents' monthly income did not influence the children's purchasing behavior, but the rhythm of receiving pocket money did. Most children were satisfied with the nutritional and hygienic quality of the food available, but their opinion of this quality as well as the reasons for buying the food and the prices spent on it differed considerably from that of their parents. This study highlights the important role of street foods in the daily diet of schoolchildren and the need for appropriate nutrition education in primary schools.

Adolescent↗
PubMed1998

Variables affecting high school students' perceptions of school foodservice.

OBJECTIVE: To determine if student satisfaction with high school foodservice is directly related to participation in the foodservice. DESIGN: A valid and reliable survey was conducted in a variety of classes such as English, history, and health science in grades 9 through 12, representing students aged 13 through 19 years. Students were asked 38 questions concerning variety of food, food quality, foodservice staff, aesthetics of the serving and dining area, and demographics. SUBJECTS/SETTING: The study was conducted with 1,823 students from 9 schools representing 4 geographic regions. STATISTICAL ANALYSIS: Stepwise multiple regression was used to determine the independent variables (attributes desired by the students) that most highly correlated with the dependent variable (satisfaction with the school foodservice overall). RESULTS: Variables most highly correlated with overall satisfaction were variety of food offered, flavor of food, attractiveness of food on the serving line, staff smiling and greeting students, quality of food choices, choices that allow students to meet cultural and ethnic preferences, courteousness of the staff, and quality of ingredients. Variety of food offered was the best predictor of satisfaction. A statistically significant difference was found (P<.01) between groups that never ate school lunch and those that ate school lunch 3 to 5 times per week on dining ambiance, food quality, and staff. The results indicate that satisfaction with foodservice is associated with purchase behavior in school foodservice programs. APPLICATIONS: School foodservice and nutrition programs are critically important for providing nutrition to millions of our future leaders. Today it is not enough to prepare healthful, good-tasting food. High school students are sophisticated and are exposed at an early age to a variety of dining experiences including fast foods, ethnic cuisine, and fine dining. These factors have influenced the attributes students use to evaluate school foodservice. To maintain participation levels and financial stability, school foodservice professionals should evaluate student satisfaction with food quality, variety, and other variables that affect overall satisfaction and participation. These data may then be incorporated into continuous quality improvement and strategic planning. Marketing must be incorporated into the strategic plan to influence student participation.

Adolescent↗
PubMed2005

The nutritional patterns of recently immigrated Honduran women.

This descriptive, exploratory study on nutritional patterns of newly immigrated Honduran women allows a better understanding of health-related nutrition issues in this Hispanic subgroup. Five focus group discussions were conducted in Spanish with 23 Honduran women, ages 25 to 60 years, living in New Orleans, who had immigrated to the United States within the past 10 years. Positive health-related changes included an increase in fruit and vegetable intake, food preparation using less grease, and baking rather than frying. Negative changes included skipping meals and eating high-fat fast foods. The Hondurans' traditional diet and positive dietary changes should be supported.

Acculturation↗
PubMed2005

Seizing the moment: California's opportunity to prevent nutrition-related health disparities in low-income Asian American population.

Asian Americans and Pacific Islanders (AAPI) have the fastest growing rate of overweight and obese children. Aggressive programs are urgently needed to prevent unhealthy acculturation-related changes in diet and physical activity and to promote the healthier aspects of traditional lifestyle habits. We conducted focus groups and key informant interviews to explore knowledge, attitudes, dietary practices, and physical activity levels among three low-income Asian American ethnic groups, Chinese, Vietnamese, and Hmong, in California. Content analysis was used to identify similarities and differences among the groups. Several common health beliefs clearly emerged. Participants noted the importance of fresh (not frozen) fruit and vegetable consumption and physical activity for general health. The concept of good health included having a harmonious family, balance, and mental and emotional stability. All groups also expressed the general belief that specific foods have hot or cold properties and are part of the Yin/Yang belief system common to Asian cultures. The lure of fast food, children's adoption of American eating habits, and long work hours were identified as barriers to a healthy, more traditional lifestyle. A California campaign for Asian Americans using multilevel strategies is recommended to counter the alarming rise of obesity among AAPI youth. Strategies directed to individual, community, and policy levels should emphasize maintenance of healthy traditional diets, informed selection of mainstream U.S. foods, and promotion of active lifestyles to prevent an impending burden from cancer and nutrition-related chronic diseases in AAPI populations.

Asian↗
PubMed2002

Development and validation of the food-craving inventory.

OBJECTIVE: The primary aim of this study was to develop and validate the Food-Craving Inventory (FCI), a self-report measure of specific food cravings. RESEARCH METHODS AND PROCEDURES: In a preliminary study, participants (n = 474) completed the initial version of the FCI. The results from this study were used in developing the revised FCI. Participants (n = 379) completed the revised FCI in the primary study designed to develop a self-report measure of specific food cravings. RESULTS: Common factor analysis yielded four conceptual factors (subscales) that were interpreted as high fats, sweets, carbohydrates/starches, and fast-food fats. Confirmatory factor analysis found that the four factors could be modeled as dimensions (or first-order factors) of a higher order construct-food craving. Test-retest and internal consistency analyses indicated good reliability for the total score and each of the subscales. Subscale scores were compared with scores on the Three Factor Eating Questionnaire and a conceptual measure of food craving. We found support for the content, concurrent, construct, and discriminant validity of the FCI. DISCUSSION: The FCI was found to be a reliable and valid measure of general and specific food cravings. The FCI can be used in research related to overeating and binge eating. Also, it may be useful in treatment studies that target obesity and/or food cravings.

Adult↗