Monday, November 16, 2009

Engineering Less Troublesome Men

From Science Daily. "Phthalates" are chemicals that can mimic female sex hormones:
A study of 145 preschool children reports, for the first time, that when the concentrations of two common phthalates in mothers' prenatal urine are elevated their sons are less likely to play with male-typical toys and games, such as trucks and play fighting. . . .

Because testosterone produces the masculine brain, researchers are concerned that fetal exposure to anti-androgens such as phthalates -- which are pervasive in the environment -- has the potential to alter masculine brain development, said lead author Shanna H. Swan, Ph.D., professor of Obstetrics and Gynecology, director of the URMC Center for Reproductive Epidemiology, and an expert in phthalates.

"Our results need to be confirmed, but are intriguing on several fronts," Swan said. "Not only are they consistent with our prior findings that link phthalates to altered male genital development, but they also are compatible with current knowledge about how hormones mold sex differences in the brain, and thus behavior. We have more work to do, but the implications are potentially profound."

Phthalates are chemicals used to soften plastics. Recent studies have shown that the major source of human exposure to the two phthalates of most concern (DEHP and DBP) is through food. These phthalates are used primarily in polyvinyl chloride (PVC), so any steps in the processing, packaging, storage, or heating of food that use PVC-containing products can introduce them into the food chain.

I can't believe that this hasn't been taken up by Fox News as proof of Obama's conspiracy to turn us into a nation of sensitive wimps who love socialized medicine and cower before terrorists.

2 comments:

kathy said...

I just thought that mothers who do whatever it is that brings them into more close contact with phthalates (microwaving food in plastic and eating plastic wrapped processed food) are more likely to have gender neutral toys.

Silly me.

John said...

I thought that only new, inexperienced parents had gender-neutral toys.