The study has triggered calls to further research the chemical's Grandjean, a physician and epidemiologist at Harvard University. This and other recent studies suggest that we should “reconsider the need to add fluoride to. In , Grand Rapids, Michigan, became the first community in the world to add fluoride to tap water. When subsequent studies showed a. In a meta-analysis, researchers from Harvard School of Public Health (HSPH) Some studies suggested that even slightly increased fluoride.
Harvard study fluoride Video
Breaking : Fluoride News : Harvard Study Finds Fluoride Lowers IQ Updated A photograph purportedly showing a 'Giant Hawaiian Cane Spider' on the side of a house is just a picture of an ordinary wolf spider. Can you reduce your fluoride exposure? We review all feedback and work to captain cooks casino flash a better experience. In short, it appears that the presence or lack of iodine is a more significant factor in both the prevalence of goiter and average IQ. This is a factual point that deserves further investigation, as a close look at these eight studies reveals that their contribution to the fluoridation debate is dubious at best. Kuitun region, Urumqi, China Size of Study: Comber H, Deady S, Montgomery E, Gavin A. The researchers found no difference between the fluoride levels in the two groups. Effect of fluoride exposure on intelligence in children. The effect of fluorine on the level of intelligence in children. No difference in IQ among the 4 to 8 year olds, a slight non-significant reduction in IQ among the 9 year olds who were exposed to fluoride during fetal development , and a significant reduction among the 10 year olds who were exposed during fetal development and their first year of life. Water Water Fluoride Levels: They therefore advised caution in interpreting the results. It is known that iron deficiency can impair motor and mental developments in children, iron concentration was therefore considered as a covariate. Meeting synopsis and slide presentations: In a page report that can be downloaded free of charge from Environmental Health Perspectives, the researchers said:. National Cancer Institute Toll-free number: This can playboy mansion online result in joint stiffness and pain, and can also lead to weak bones or fractures in older adults.
Harvard study fluoride - welche mit
These studies have not found an increased risk of osteosarcoma in areas of water fluoridation. The general consensus among the reviews done to date is that there is no strong evidence of a link between water fluoridation and cancer. Coal Urinary Fluoride Levels: National Cancer Institute Toll-free number: These combined efforts have produced myriad confused and self-referential claims that would require multiple posts to debunk. A Average IQ in High-F area Xinhua County, Hunan Province, China Size of study: Children who lived in areas with high fluoride exposure had lower IQ scores than those who lived in low-exposure or control areas. The American Dentistry Association says that the process reduces decay rates by 25 percent. Xinhua County, Hunan Province, China Size of study: After income was adjusted for, though, the link held up. Sign up For The Newsletter. Starting in , the United States Public Health Service PHS recommended that public water supplies contain fluoride to help prevent tooth decay. Shivaprakash PK, et al. The higher the water fluoride is, the lower the level of IQ. Others felt more strongly. But the levels in private water sources, such as wells, may still be higher. Moreover, age and sex matched controls were selected from the [low-fluoride area]. Considering it is applied to entire populations or certain groups within a population, the definition is chemical warfare- a tool most useful to eugenicists who are intent on depopulation [sic] the planet. Sudhir KM, et al.