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Atrazine, one the most commonly used pesticides in the United
States, causes sexual abnormality in frogs, according to scientists
from the Environmental Protection Agency (EPA). The New York
Times article, "Popular Pesticide Faulted for Frogs'
Sexual Abnormalities" by Jennifer Lee, discusses this
important issue.
Several studies have found that frogs develop a variety of
defects, including multiple testes and multiple ovaries, when
exposed to the chemical. The results from the studies have
not been consistent, however, and scientists are recommending
further research to determine the impact of atrazine on frog
populations.
Atrazine, which has been banned in seven European countries,
is widely found in U.S. waters particularly after planting
season when rain causes the chemical to spread from fields.
Farmers commonly use the chemical because it is effective
and relatively inexpensive.
Previous laboratory studies have found an association between
atrazine and cancer in rats, and a link between atrazine exposure
and cancer in humans has been found by some epidemiological
studies.
Atrazine raises discussion of chemicals known as endocrine
disruptors. Small amounts of such chemicals can interfere
with the hormones that control biological activity. Trace
amounts of the chemicals have been linked to declining sperm
counts, infertility and cancer in humans, and have been associated
with genital defects in wildlife.
To
read the full article on this significant issue please visit
The New York
Times Web site. You will need to register with their site
(it’s free) to view the entire article.
New
York Times
June 19, 2003
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