Organophosphate poisoning
Organophosphate pesticides are one of the top causes of poisoning worldwide, with an annual incidence of poisonings among agricultural workers varying from 3-10% per country.
Fluoridation by country
As of May 2000, 42 of the 50 largest U.S. cities had water fluoridation. In 2010, 66% of all U.S. residents and 74% of U.S. residents with access to community water systems receive fluoridated water. In 2010, a U.S. Centers for Disease Control and Prevention study determined that "40.7% of adolescents aged 12–15 had dental fluorosis [in 1999–2004]". In response, the U.S. Department of Health and Human Services together with the U.S. Environmental Protection Agency are proposing to reduce the recommended level of fluoride in drinking water to the lowest end of the current range, 0.7 milligrams per liter of water (mg/L), from the previous recommended maximum of 0.7 to 1.2 mg/L in recognition of the increase in sources of fluoride such as fluoridated toothpastes and mouthwashes This could effectively terminate municipal water fluoridation in areas where fluoride levels from mineral deposits and industrial pollution exceed the new recommendation.