Environmental and Occupational Health: December 2004 Archives

Common pesticides may be cause of frog deaths

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New research indicates that frequently used pesticides, including types that were once thought to be relatively benign, make be linked to the widespread disappearance of California frog populations. A researcher at California State University, Sacramento has found evidence that frog declines are associated with upwind pesticide use.

Sacramento State environmental studies professor Carlos Davidson says there is a strong association between upwind pesticide use and declines in four frog species: the red-legged frog, the mountain yellow-legged frog, the foothill yellow-legged frog and the Cascades frog. And the declines were most strongly associated with the use of cholinesterase-inhibiting pesticides, which include many of today's most heavily used pesticides. Davidson's findings appear in the December issue of the Journal of Ecological Applications.

Science Blog

Lead contamination could increase cataracts, blindness risk

Posted 12/7/2004 7:22 PM Updated 12/7/2004 9:56 PM

By Kathleen Fackelmann, USA TODAY
A scientific report released today suggests that older men with high lead concentrations in their bodies have a much higher risk of developing cataracts, the leading cause of blindness.
This is the first large study to show that lifetime exposure to lead in the environment might play a role in the formation of cataracts, a clouding of the eye's lens.

The findings suggest that there might be ways to reduce the risk of cataracts, a condition once thought to be an inevitable part of growing older, says Howard Hu, one author of the study. The report appears in today's Journal of the American Medical Association.

USA Today

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This page is an archive of entries in the Environmental and Occupational Health category from December 2004.

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