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Coal tar was one of the first chemical substances proven to cause cancer from occupational exposure, during research in 1775 on the cause of chimney sweeps' carcinoma. [13] Modern studies have shown that working with coal tar pitch, such as during the paving of roads or when working on roofs, increases the risk of cancer.
Coal tar can lead to health risks from long-term exposure. ... Environmentalists say the 11-acre site near the Norfolk Southern Railroad is likely still leaking cancer-causing materials into the ...
One can produce a tar-like substance from corn stalks by heating them in a microwave oven. This process is known as pyrolysis. Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive distillation. Tar can be produced from coal, wood, petroleum, or peat. [1]
It is a component of coal tar, cigarette smoke and smog and thought to be a major contributor to its carcinogenic properties. [1] The mutagenicity of benzo[ c ]fluorene is mainly attributed to formation of metabolites that are reactive and capable of forming DNA adducts . [ 2 ]
A Lake Norman woman who developed kidney cancer sued Duke Energy on Wednesday over its disposal of toxic coal ash near and beneath lake-area homes and businesses in the 1990s and 2000s.
Coal-tar pitch; Coal-tars (see Coal-tar distillation) Engine exhaust, diesel [5] Estrogen-progestogen menopausal therapy (combined) Estrogen-progestogen oral contraceptives (combined) [note 5] Estrogen therapy, postmenopausal NB There is "evidence suggesting lack of carcinogenicity" for estrogen-only menopausal therapy in humans and colorectal ...
A study led by Mayo Clinic found a “widening gap between lifespan and healthspan" among 183 countries. The lead researcher and another doctor discuss the drivers of poor health late in life.
They even showed that different mechanical or chemical irritation, especially the painting of coal-tar upon the inner surface of the ear was the most effective in inducing carcinoma in rabbits. [10] A number of independent experiments subsequently confirmed the cancer-inducing effect of coal-tar in mice. [11]