old sperm counts study?

[ttweed@wildrockies.org (Tony Tweedale)]

I see the Jan '82 issue of _Lifelines--OCAW Health & Safety News_ has an
article on occupational reproductive risks that says "Some experts say the
sperm count of the American man has decined dramatically in the past 30
years, a decline that may be influenced by the amazing rise of new toxic
chemicals...".  In tables, nitrous oxide, Pb w/ Cd, carbon disulfide, DDT,
DBCP (dibromochloropropane) and malathion are listed as affecting sperm in
animals; and chlorprene, DBCP, Pb, microwaves, ionizing radiation and
elevated T's are listed as affecting human sperm (other effects of these &
other chems are also summarized in the tables).  Anyway, interesting that
the sperm count issue was around then, tho come to think, I do recall
discussion in more current research about such early studies.

Tony Tweedale

Causality is a concept not subject to empirical demonstration. -David Hume
(1711-'76)

Temperate but endangered planet.  Enjoys weather, northern lights,
continental drift.  Seeks caring relationship with intelligent life form.
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