Water

Fluoride use is one of the main factors responsible for the decline in prevalence and severity of dental caries and cavities (tooth decay) in the United States (1). Brushing children’s teeth is recommended when the first tooth erupts, as early as 6 months, and the first dental visit should occur no later than age 1 year (2–4). However, ingestion of too much fluoride while teeth are ...

According to a study conducted at Duke University revealed that hydraulic fracking is having a catastrophic impact on water supplies throughout the US. The findings of the study suggest that fracking is using far much more water than before, and putting a huge dent in the amount of drinkable water available in water supplies. Hydraulic fracturing is a natural gas extraction method that has become extremely ...

The amount of water used per well for hydraulic fracturing surged by up to 770 percent between 2011 and 2016 in all major U.S. shale gas and oil production regions, a new Duke University study finds. The volume of brine-laden wastewater that fracked oil and gas wells generated during their first year of production also increased by up to 1440 percent during the same period, the ...

A government study found that chemicals found in drinking water around the country could pose risks to human health at lower levels than the government currently recognizes, potentially opening the door for more states to begin cleaning up or regulating the chemical. The report by a branch of the Office of Health and Human Services examined a category of chemicals commonly called PFAS that have been ...

Using hydraulic fracturing to extract oil and natural gas from shale is a common technique used worldwide. Because the technique requires large amounts of water, however, it raises the question of whether it could lead to water shortages or competition with other water uses, especially agriculture. In a new paper in the American Geophysical Union journal Earth's Future, Lorenzo Rosa and his colleagues evaluated the impacts ...

Author: Kheradpisheh Z, Mirzaei M, Mahvi AH, Mokhtari M, Azizi R, Fallahzadeh H, Ehrampoush MH. Journal Name: Nature | Scientific Reports Publish Date: 02-08-2018 Volume/Page: 8(1):2674. Abstract Background Artificial neural networks (ANNs) and adaptive neural-fuzzy Inference system (ANFIS) are the best solutions to finding the correlation between some water parameters and human hormones. The correlation between thyroid stimulating hormone (TSH) and drinking water fluoride studied by ...

Effect of fluoride on major organs with the different time of exposure in rats. Author: Perera T, Ranasinghe S, Alles N, Waduge R. Journal Name: Environmental Health and Preventive Medicine Publish Date: May 16, 2018 Abstract BACKGROUND: High fluoride levels in drinking water in relation to the prevalence of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka were investigated using rats as an experimental ...

OP V – 2 Prenatal fluoride exposure and neurobehavior among children 1–3 years of age in Mexico Author: Thomas D, Sanchez B, Peterson K, Basu N, Martinez-Mier EA, Mercado-Garcia A, Hernandez-Avila M, Till C, Bashash M, Hu H, Tellez-Rojo MM. Journal Name: Occupational & Environmental Medicine Publish Date: 03-18-2018 Abstract Background/aim Recent studies report an inverse association between fluoride (F) exposure and IQ in children, but ...

Fluoride-induced alterations of synapse-related proteins in the cerebral cortex of ICR offspring mouse brain. Author: Ge Y, Chen L, Yin Z, Song X, Ruan T, Hua L, Liu J, Wang J, Ning H. (Zhang Research Group, China) Journal Name: Chemosphere Publish Date: 06-01-2018 Abstract Fluoride (F) exposure causes cognitive dysfunction in humans and animals. However, the precise molecular mechanisms by which fluoride exerts its neurotoxic effects ...

Highlights Fluoride induced myelin damage in mouse hippocampus. Fluoride shortened the synaptic cleft and thickened the postsynaptic density. Fluoride altered the expressions of CREB, BDNF, and NCAM in hippocampus. Abstract To investigate the fluoride-induced neurotoxicity on mice hippocampus, healthy adult mice were exposed to 25, 50, and 100 mg NaF/L for 60 days. The results showed that medium and high fluoride administration induced ultrastructural alterations in the ...