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Query: UMLS:C0020175 (hunger)
 5,670 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Major phases of the physiology of food intake regulation remain hypothetical. There is a central regulatory mechanism for hunger and satiety, but the signals and messages that activate the brain centers remain conjectural. The alimentary tract regulation, the regulation by osmoreceptors, the thermostatic, the glucostatic, the lipostatic, the amino acid, and the hormonal food intake regulation theories leave many questions unanswered. Low molecular weight peptides appear to have an important effect on brain functions. Hypothalamic peptides such as thyrotropin-releasing hormone, gonadotropin-releasing hormone, and somatostatin have been assigned new roles in various brain functions. The hypothalamus and probably other parts of the brain produce also anorexigenic peptides. Anorexia is a common manifestation of cancer. It is proposed that peptides, oligonucleotides, and other small metabolites produced by the cancer and by the tumor-bearing host are responsible for the genesis of the anorexia. They produce the anorexia through a peripheral effect on neuroendocrine cells and neuroreceptors and through a direct effect on hypothalamic and other central nervous system sensor and responder cells.
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PMID:Anorexia-producing intermediary metabolites. 17 68

Haiti exemplifies all of the problems of developing countries: poverty, hunger, reduced longevity, and an illiteracy rate of more than 75%. It is, therefore, not surprising that so little attention has been given to late-onset chronic diseases, particularly cancer. The results of a special survey of cancer cases first diagnosed in 1979-84 are presented, with relative proportions of cancers by site, according to age, sex and geographical area of origin (coastal vs. mountain). The major cancers recorded were: stomach and intestine, primary hepatic (especially in males), cervix, penis, and Kaposi's sarcoma (KS). There were 18 cases of KS, all of which occurred among AIDS patients. Among males, hepatic cancers accounted for a significantly larger percentage of cancer cases in the mountain vs. coastal origin group, while the reverse was true for penile cancer and KS. These preliminary data on cancer in Haiti are discussed with particular reference to dietary factors (for cancers of stomach, intestine, liver and cervix). The clarification and confirmation of these possible relationships between diet and cancer should provide an opportunity to elucidate environmental factors as causes of cancer.
Int J Cancer 1986 Jul 15
PMID:Cancer in Haiti 1979-84: distribution of various forms of cancer according to geographical area and sex. 372 25

Tumor-induced reduction in food intake in 2 rat-tumor organisms was distributed approximately equally between reduction in average size (premature satiety) and reduction in frequency (impaired perception of hunger) of effective meals. In both organisms, the frequency of futile meals (activity at food dish without any food ingestion) increased in the tumor-bearing state, and total meal frequency (effective plus futile meals) was unchanged from the tumor-free state. It is proposed that the presence of tumor reduces some meals to zero size and that satiety can occur in the cephalic phase of digestion before any food has been ingested. By this interpretation, cancer hypophagia would be entirely attributable to premature satiety.
Cancer Res 1984 Mar
PMID:Contributions of reduced hunger and premature satiety to cancerous hypophagia in rats. 653 2

Intensity and pleasantness of five suprathreshold concentrations each of citric acid, NaCl, urea, and sucrose in beverages were scaled by 62 patients with primary tumors in upper gastrointestinal or thoracic areas, 22 of whom had chemotherapy within the month before testing. Mean intensity scores directly correlated with concentration of sour, salty, bitter, and sweet stimuli and indicated no abnormalities of taste perception among patients grouped by tumor site, therapy, or appetite. In contrast, mean hedonic functions differed among individuals and groups. Patients on chemotherapy were less likely to display a distinct preference for any of the five concentrations of sucrose, particularly high levels, than those not on chemotherapy. Anorectics were more likely to prefer lower sweetness levels than nonanorectics, but sweet foods constituted a greater percentage of their daily caloric intake. Current theories for regulation of hunger and satiety were examined to elucidate the pathogenesis of anorexia in cancer patients.
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PMID:Is taste related to anorexia in cancer patients? 695 61

Some of the main causes of death prior to 1900 are mentioned, including disastrous epidemics of high mortality such as plague, smallpox and the so-called hunger epidemics. Also discussed are two chronic diseases remarkable for Iceland in old times i.e., leprosy and hydatid disease. In the first third of the 20th century, infectious diseases still were the main cause of death in Iceland. The importance of tuberculosis in this connection is stressed. The very high infant mortality up to the beginning of this century is stressed. The changes in the main causes of death in the last decades are described and the growing influence of degenerative vascular diseases and cancer in that connection pointed out. Last, the remarkable fall in the infant mortality and increasing life expectancy from the beginning of this century with growing prosperity of the nation is stressed.
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PMID:Causes of death in a subarctic population. 701 25

Bangladesh exemplifies all of the problems of Third World countries: poverty, hunger, reduced longevity, and an illiteracy rate hovering at more than 80 per cent. The current status of oncology in Bangladesh was surveyed. Staff physicians, deans, medical students, nurses, and patients at six of the eight medical college hospitals, seven village hospitals, and a large private hospital provided background and clinical material. There are no medical or surgical oncologists in Bangladesh. The eight qualified radiation therapists are able to provide only meager diagnostic potential or radiation therapy with their antiquated equipment. Pathology service was severely handicapped by understaffing and outmoded equipment. With a relatively modest investment, epidemiological studies could be undertaken and an effective cancer control program established since oral and cervical cancers are common.
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PMID:Cancer in the Third World: Bangladesh 1980. 727 Jul 64

Regulation of hunger and satiety is a complex process thought to be controlled by a complex interplay of neurotransmitters in the hypothalamic region of the brain. Reduced food intake or anorexia has also been observed under various disease or disorder conditions including AIDS and cancer. On the other hand, increased appetite because of some impairment of central mechanisms regulating the food intake could also cause/obesity. A large number of substances including neuropeptides, hormones, drugs, and synthetic peptides have been implicated in the regulation of appetite and food intake behavior in normal as well as disease or disorder conditions. Most of these substances are not directly involved in the regulation of normal hunger and satiety but exert their effect indirectly via other media. Some of them are involved under certain pathologic conditions and during the course they become involved directly or indirectly in the triggering of hunger and satiety regulatory mechanism. Recently, we have been able to isolate and purify an endogenous proteoglycan from membranes of animal and plant sources. This membrane anchored proteoglycan termed as 'Satiomem' reduces food intake without any rebound effects and has no apparent toxicity. It also fulfils all the criteria of a true satiety or anorexigenic substance. The release of satiomem from the cell surface could be mediated by a specific phospholipase-C. Satiomem seems to be involved in transducing activating signals and may also act as a source of second messenger for the regulatory mechanism of appetite. This article summarizes the regulatory aspects of hunger and satiety mechanisms controlled by endogenous substances with the emphasis on our present knowledge about satiomem.
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PMID:A step towards developing the expertise to control hunger and satiety: regulatory role of satiomem--a membrane proteoglycan. 765 74

An analysis conducted by WHO in 1991 and 1992 indicated that death rates from diseases related to diet and life-style (heart conditions, cancer, and diabetes) have increased significantly in many countries during the past 30 years, largely owing to changes in diet and life-style. 40 high-income countries have diet-related disorders, and as many as 80 middle-income nations may have both undernutrition and overnutrition problems. Undernutrition is widespread in some 50 low-income countries and is associated with a high incidence of stunting and micronutrient deficiencies (especially iron, iodine, and vitamin A). Diet-related deficiencies affect 2000 million people. WHO scientists reviewed data from 26 developed and 16 developing countries from the period 1960-89: 20 countries showed increases ranging up to 160% in death rates from diet-related and life-style-related causes. The biggest decreases were in Australia, Canada, Japan, and the USA where education advised people to limit intakes of fat, saturated fat, and salt as well as to increase exercise and reduce smoking. Data on food availability for 1988-90 showed that an estimated 786 million people in developing countries were chronically undernourished. Hunger and malnutrition affect many of the 123 million people living in 11 countries where the food situation is critical. Some 192 million children 5 years of age suffer from protein-energy malnutrition characterized by retardation of physical growth and lowered resistance to infections. 55 million of these underweight children are in south Asian countries. In these countries, about half of all deaths occur before 5 years of age, and the majority of these deaths are caused by diarrheal disease. It is estimated that up to 70% of diarrhea cases are food-borne in origin. There are 1500 million episodes of diarrhea annually in children 5 years of age, killing 3 million of them.
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PMID:International Conference on nutrition. 818 79

Serum bone alkaline phosphatase (BALP), serum carboxy-terminal propeptide of type I procollagen (PICP) and serum bone gla protein (BGP) as markers of bone formation, serum carboxy-terminal telopeptide of type I collagen (ICTP) as a marker of collagen resorption and fasting molar ratio of urinary calcium to creatinine (CaCr) and serum parathyroid hormone (PTH) were determined in two groups of cancer patients: 48 with advanced or metastatic disease with negative bone scan and 174 with bone metastases categorised as having lytic, mixed or blastic lesions and with more or fewer than or equal to three sites involved. In patients without apparent bone involvement, bone formation markers were rarely elevated. Conversely, serum ICTP was frequently found to be supranormal, showing it to be a non-specific marker for early detection of bone metastases. As expected, values of bone formation markers progressively increased in patients with lytic, mixed and blastic lesions, but ICTP levels did not show any differences according to the types of bone appearances, confirming previous reports of elevated osteoclast activity also in patients with apparent blastic lesions. Serum PTH increased significantly in patients with lytic compared with patients with mixed and blastic appearances, paralleling the bone formation markers, but CaCr showed the opposite pattern. These data are compatible with calcium entrapment in the bone in patients with increased osteoblast activity. This so called 'bone hunger syndrome' is further confirmed by the finding that in the subgroup of blastic appearances CaCr diminished whereas both ICTP and PTH increased according to the extent of tumour load in the bone.
Br J Cancer 1996 Jun
PMID:Biochemical evaluation of bone turnover in cancer patients with bone metastases: relationship with radiograph appearances and disease extension. 866 34

Nutrition and food science have each enhanced the development of an abundant, nutritious, safe food supply. A healthy diet should contain all of the required nutrients and sufficient calories to balance energy expenditure and provide for growth and maintenance throughout the life cycle. Importantly, dietary factors are associated with 5 of the 10 leading causes of death, including coronary heart disease, certain types of cancer, stroke, noninsulin dependent diabetes mellitus and atherosclerosis. National health care expenditures for 1990 totaled $666 billion of which 30% are related to inappropriate diet. Identification of external factors that contribute to premature death would aid preventive efforts, improve the quality of life, and reduce health care costs. Even though genetic predisposition increases susceptible people's risk for many of these chronic diseases, these conditions may be diminished or prevented by improvements in the American diet. Each stage of the life cycle has specific nutrient needs. Throughout infancy, childhood and adolescence nutrients are required to meet the growth processes as well as cognitive function. During pregnancy nutrients are required for both mother and developing infant needs. Adult nutrition focuses on tissue maintenance, nutrient and energy needs, and disease prevention. As the population of elderly increase in number and greater age, nutritional needs must be met to minimize certain disease states and assure the quality of life. Nutrition associated health risks have been identified for coronary heart disease, cancer and diabetes mellitus. Recommendations for each includes a decrease in dietary fat, awareness of caloric intake and enhancement of nutrient density including an increase in fruit and vegetables. These recommendations also impact obesity and diminish the compounding of other disease states affected by excessive body weight. Calcium intake at early ages affects development of bone density and manifestation of osteoporosis. Current gaps in knowledge are also identified that could improve health. Numerous nutrients are being examined for their regulation of specific gene expressions and in the processes of transcription and translation. To offer food products with greater nutrient density or improved functional health ingredients, modification of existing foods is needed to assure an improved diet. Policies to improve health require integration of nutrition needs with economic growth and development, agriculture and food production, processing, marketing, health care and education, and includes changing life styles and food choices. Increased research support is required to achieve national health goals with emphasis on nutrition and food sciences. Education methods must be improved to better inform consumers, to encourage food producers and manufactures to produce healthier foods, to assure training of future professionals and to provide legislators with the basis to make informed decisions. Recommendations to CFERR are identified. Improved quality and availability of nutritious foods will result in a healthier, more productive population. A decrease in the occurrence and duration of chronic disease should diminish the cost of health care and allow these resources to further benefit the nation. International concerns about undernutrition include 780 million people who are malnourished, lacking sufficient food to meet their basic nutritional needs for protein and energy, and 2 billion people who subsist on diets lacking essential nutrients needed for growth, development and physiological maintenance. National concerns about undernutrition exist based on incomplete data identified by indices of hunger and characterized by an increased demand for food assistance for women, children and the elderly. Major health problems in the US impacted by diet and nutrition include coronary heart disease, atherosclerosis, some types of cancer, non-insulin dependent diabetes mellitus, hypert
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PMID:Interrelationships of food, nutrition, diet and health: the National Association of State Universities and Land Grant Colleges White Paper. 889 67


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