Carcinogen worries stick to food packaging  Perfluorooctanoic
acid is found in 98% of Americans' blood. The chemical industry
says there's no reason to worry about PFOA.  David Lazarus  July
30, 2008   The next time you make some microwave popcorn or cook
a frozen pizza, consider this: The packaging of many of these
products contains a chemical that the Environmental Protection
Agency considers potentially carcinogenic and wants businesses
to voluntarily stop using by 2015.  Studies show that this
chemical -- perfluorooctanoic acid, or PFOA -- is present in 98%
of Americans' blood and 100% of newborns. It doesn't break down
and thus accumulates in the system over time.  The chemical
industry says there's no reason to worry about PFOA, which is
used to make Teflon pans, Gore-Tex clothing and to prevent food
from sticking to paper packaging. The industry says that while
the EPA's carcinogen concerns are based on animal tests, there's
no evidence that PFOA is harmful to humans.  "I still serve
frozen pizza in my