I recently heard a radio show where the host interviewed the author of a book called "Boys Adrift" that explores unmotivated boys versus motivated girls, a phenomena sweeping the developed world and virtually unknown in the developing world.
One of the author's five theses was that environmental chemicals and hormones in food could be responsible for a loss of testosterone and motivation among boys.
I think a possibility that he might have overlooked would be the effect of statins used by either mother or father of the children. The mother could be especially important since she both carries and nurses the child, but sperm could be affected too.
We know that DES affects male children in the second generation (their mother's mother took it). Cholesterol is necessary for testosterone production, and statins interfere with how the body metabolizes nutrients to produce it.
I think some studies are needed to determine whether our male children are suffering from statins used by their parents. Conversely, we may want to look at whether female children are changed in ways that make them more confident, competitive or what-have-you. Not all side effects are bad ... the more we learn, the more we can make good choices.