Because pesticides may operate through different mechanisms, the authors studied the risk
of prostate cancer associated with specific pesticides in the Agricultural Health Study (1993 …

Background: Few studies have examined the relationship between long-term exposure to
ambient fine particulate matter (PM2. 5) and nonaccidental mortality in rural populations …

Background: Nitrate is a drinking water contaminant arising from agricultural sources, and it
is a precursor in the endogenous formation of N-nitroso compounds (NOC), which are …

Nitrate and nitrite are precursors of endogenously formed N‐nitroso compounds (NOC),
known animal carcinogens. Nitrosation reactions forming NOCs can be inhibited by vitamin …

Contamination of drinking water by nitrate is a growing problem in many agricultural areas of
the country. Ingested nitrate can lead to the endogenous formation of N-nitroso compounds …

Background: Previous studies on the associations between ambient pollen exposures and
daily respiratory symptoms have produced inconsistent results. We investigated these …

Background Many pesticides are known to have thyroid-disrupting properties. However, few
studies have evaluated the association between specific pesticide ingredients and risk of …

Background N-nitroso compounds (NOC) formed endogenously after nitrate/nitrite ingestion
and disinfection by-products (DBPs) are suspected colorectal carcinogens, but …

Background: N-nitroso compounds formed endogenously after nitrate/nitrite ingestion are
animal renal carcinogens. Previous epidemiologic studies of drinking water nitrate did not …

Polybrominated diphenyl ethers (PBDEs) alter thyroid hormone homeostasis, but their
relationship with thyroid cancer is unknown. To investigate whether serum concentrations of …