The reason with fat children also is mixed year after year is fat and same, cent is pure sex fat send a gender with afterwards fat two kinds. Afterwards hair sex is fat those who point to is those who have clear cause of disease is fat, occupy only 1% all and fat. Include the following kinds: ⑴ nerve is endocrine the gender is fat, include to leave grave head or disease of pituitary tumour, coriaceous mellow grow in quantity, thyroid function is low decrease, function of the gland other shape of armour of disease of brain issueing grave, false sex is low decrease, grow hormone lack disease, insulin secretes tumor to wait a moment, detailed introduction can consult the 11st ask. ⑵ certain heredity metabolizes to be asked for integratedly, be like in front says flesh tension intelligence is low - sexual function drops - fat and integrated proof, pigment retina is phlogistic - sexual function drops - show deformation is asked for integratedly more, fat - retina degrades - nerve sex deaf is asked for integratedly, fat - reproductive incapacity is asked for integratedly, congenital spermary is depauperate. Besides fat beyond, these little patients that solicit integratedly return meeting companion to have other and unusual, function of for example stunt, sex is intellective and not complete, deformation, low etc. Sex of ⑶ cure source is fat, because treat other disease,those who point to is and accessary those who cause is fat. For instance the child of certain small nephrosis, take the coriaceous steroid hormone such as Jiangdesong for a long time, or it is operation of certain skull brain the influence arrived to leave grave head, can cause fat. The 99% above with fat children belong to pure sex fat, what did not make clear the pathogeny namely is fat. The scientist's fat to pure sex happening the reason had much research, clearer have: ⑴ genetic element. Parents has one party fat, the possibility with fat children has 32 ~ 34% ; Parental both sides all is fat, the occurence rate with fat children rises for 50 ~ 60% . On the other hand, the fat child of 72% , there also is at least one person in parents fat. And had found at present a variety of with fat concerned genetic gene. ⑵ eats overmuch, nutrition superfluous. Current child often eats much fast adipose food, sweet food, especially absoluteness ground snack, drink sweet beverage, these metropolises are caused fat. ⑶ movement is too little. Study burden of the child is at present heavier and heavier, add parents to hope children will have a bright future the heart is cut, increase a lot of extracurricular study to the child, for instance music, art, foreign language is waited a moment, packed the child's many activity time. Additional, even if extracurricular activity, also be manual activity less and less, quiet activity is increasing, what TV video, sport plane, can let the child reduce activity, growth adipose. Fat child does not love sport, the child that does not love sport becomes fatter, the result creates vicious circle. Element of ⑷ society psychology, especially the parent's fat to children wrong understanding, bring up the most easily give a fat child. Additional, research makes clear, the child if homework pressure is overweight, or it is study achievement is not ideal, spirit is long-term and nervous, meet intended innocently up hill and dale much snack, so as to alleviates the condition of mental insecurity, if things go on like this, can appear fat. So, to the child fat, should search an account from many sided, specific aim ground has treatment. Influence, buy more food. By this token, social environment element is having quite extensive effect to fat happening.