Comparative Study Of The Epidemiological Characteristics Of Different Regions Of Inner Mongolia Tea Type Fluorosis Geographic

China is one of the worst which are suffering from serious endemic fluorosis, its coverage area widely and its impact on humanbeing badly, which is endemic desese that Chinaese government has been paying more attention to control. In the past study on drinking water and coal type fluorosis comparative found that in the same dose of fluoride intake of fluoride poisoning the symptoms of the brick tea type fluorosis was more serious. So this paper has been selected two typical tea-fluorosis areas in Inner Mongolia as research objects, clear comparative study of different geographical characteristics of the region as well as a variety of tea-life elements on the impact of fluoride poisoning, and to identify brick tea type fluorosis fluoride, aluminum and the pathological features of the mechanism and its influencing factors. The main results are shown as followings:(1) The contents of the elements in environmental samples of the typical two-brick tea type fluorosis areas are in the normal reference values, or close to normal, and that in the food chain containing tea, grain and vegetables is less than or close to normal reference values.(2) The tea incidence of fluorosis, which is unrelated to sex and age, is only related to the tea and the total intake tea fluoride in the body.(3) Through comparison of the tea group and the control group, brick tea drinking can lead to elements of F, Al and Mn accumulation in human hair, resulting in increasing of F and Al in human urine. By the correlation analysis of elements in patients of fluorosis, found that as the accumulation of F, Al elements, it will cause Ca, K, Fe and other elements of the wastage of elements in patients that the metabolic imbalance occurred.(4) Through the correlation analysis of the tea intake and fluorosis disease in two of the region, found that F, and Al in brick tea type fluorosis joint disease, and the increasing of elements of F , Al and Mn content can lead to the occurrence of skeletal fluorosis.(5) The regression analysis of the relevant factors in tea intaking and the incidence of the brick tea type fluorosis showed that age and gender is not the risk factors of the brick tea type fluorosis, and the intaking of tea and the age of residence are risk factors, and the extent of the brick tea type fluorosis relate to the F in hair and the Al in urine. As the increaing of the content of F in hair, the content of Al in urine decreases and the more severe fluorosis disease. It shows that as the worse in fluorosis, the accumulation of the elements of F and Al in body may have a joint role to the condition of the brick tea type fluorosis.