Posts Tagged ‘testosterone’

BPA mimics estrogen and phthalates block testosterone

This article sums up pretty much what we already know, but it does a good job of showing how BPA acts like estrogen and phthalates block testosterone. I did learn that BPA exposure to babies in the womb have a greater negative effect on girls than boys, causing more reproductive harm than I thought.

Mice that were exposed to BPA as fetuses developed abnormalities of the ovaries, uterus, and vagina, Dr. Taylor said. Other murine studies found genetic abnormalities in eggs, an increased risk of mammary cancers, and early puberty in females.

The list of problems was shorter for male mice exposed to the chemical, with reduced sperm production and increased prostate size at the top.

And for phthalates…

Studies in male animals have found reduced sperm production, undescended testes, hypospadias, decreased testosterone production, and reduced anogenital distance.

The chemical’s effects on female reproduction were far fewer, with murine studies linking it to delayed or premature puberty.

They touch on the FDA’s stance that BPA is safe, where the FDA states they did not have sufficient evidence. However, human studies would be difficult. For one, a human study on either substance would be difficult since the entire population is exposed to both chemicals. Also, subjecting humans to high levels of this stuff would be unethical.

“Sometimes you just have to make decisions based on ‘inadequate’ evidence,” Dr. Lustig said regarding the FDA’s investigation of BPA, and potentially phthalates. “You just [make them] based on the right thing to do.”

Amen to that.

Read the entire article here.

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See my lists of BPA free items for children and some for mom too.
BPA free bottles, sippy cups and food storage
BPA and phthalate free pacifiers
BPA and phthalate free teethers and rattles
 
BPA free dishes, utensils, snack containers and food storage

Related Articles
Harmful plastics with BPA
Lead and PVC-free lunch boxes
Non-Toxic Toys for Christmas 
The Real Story Behind BPA

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