Eating disorders

Is a summary appetite before meals or eating certain foods on a pleasant feeling, it is based on the conditions on the basis of reflection. Body and the spirit of the disease may cause any changes in appetite, including anorexia, appetite and feeding hyperthyroidism. Cause pathogenesis one. Gastrointestinal physiological function : feeding is the basis of gastrointestinal function in normal physiological circumstances, a person of hunger, Eating appetite and sense to regulate and guarantee food intake. Food in the mouth and saliva Jiaosui and mix through esophageal Canal. in gastric acid containing bone and pepsin and the gastric juice mixed initial digestion, and then enter the small intestine, in alkaline pH values, In pancreatin, bile and multiple hormone full role, digestion and absorption, Finally, the Food and fecal residue condensed into rectum discharges. 2. Feeding Center : Food is one of the senior activities phenomenon. After eating hunger vanishes. But right delicacies can cause loss of appetite. Known hypothalamus and the regulation of feeding plays an important role. When damage to the ventral hypothalamus, will cause excessive animal feeding lead to obesity and its lateral damage was caused Antifeedant and refused to drink, Faced with indifferent food until dying of hunger. Instead, the right ventral hypothalamus and the lateral zones appeared to be stimulated and destroyed the opposite result. 3. Ingestion of the neurochemical mechanisms : The study found that the dielectric function of the central nervous right feeding function, will norepinephrine injected into mice in the lateral hypothalamus, 5 ~ 10 minutes after consumption. 20 ~ 40 minutes, you can get the monkey further Eating diet. Peripheral injection of 5-HT reduces food intake of rats. to be 5-HT directly or intraventricular injection of atrioventricular nuclear hypothalamus, the feeding of rats can be inhibited, the specific mechanism is not yet clear. Acetylcholine through the limbic system structures for animal consumption. High blood sugar, also inhibited the right feeding. 4. Gastrointestinal appetite of the regulatory role : filling the stomach contraction or not to the extent of anorexia is important information feedback, when empty stomach contraction increased, one out of hunger, appetite increase; Food stomach filling, contraction weakened, people have suffered flu, anorexia. 5. Psychological factors influence appetite : Gastrointestinal autonomic unencumbered by the psychological and physiological passed between autonomic, hormones and neural material and other intermediary media communication and adjustments that happy, increased appetite, depression sadness when anorexia.