The study, extracts of channel catfish in the Allegheny and Monongahela rivers tested trapped near Pittsburgh, suggests that fish in areas captured by dense sewer overflows, substances which contain the actions of estrogen, the female hormone mimic. Since fish are guardians of the water quality, as the canary in the coal mine is a sentinel of air pollution, and can concentrate fat soluble chemicals from their habitats within their bodies, these results suggest, They foundmaceutical estrogens and xenoestrogens chemicals, those that mimic estrogens in the body be that. Their way into the area waterways – We believe there are tons of pharmaceutical and xenoestrogens waste overflow in outflows from sewers treatment plants and sewage, and that these chemicals are concentrated at the end and reinforced in channel catfish from contaminated areas, said Conrad D see more . Lead investigator, Department environment and Safety, University of Pittsburgh Graduate School of Public Health. Result result from inadequate sewerage infrastructure, the raw, untreated wastewater solves directly into the area flows during wet weather, In Pittsburgh alone, will be 16 billion gallons of raw, untreated sewage was deposited in the area rivers every year with major implications for public health. .
Occurred 4 million heart attacks or strokes during this time. After plotting daily deaths against fluctuations in temperature during one day, they discovered that the common connection was ozone. The higher the the ozone levels were higher, the risks of cardiovascular and stroke deaths due to high temperatures.
The findings were published in the early online issue of the Proceedings of National Academy of Sciences.