Or something like that...STUDY: Average penis size shrinking...
I'm not sure what original study you referenced, but Europe has done considerable research on this for an extended number of years. The size of penises are reducing over the last few decades, when you collect one time data from men as to their penis length, the average answer has been decreasing steadily each year.
We also have an unanticipated and dramatic rise in the past few decades in prostate cancer and breast cancer. In this year of 2015, men have become increasingly more gender neutral in noticeable ways, physically speaking. Pecs are resembling breast more and more. Body hair has decreased. Men are becoming more likely to be overweight compared to data gathered in earlier decades.
Plus, there are some marine life that is becoming less gender specific.
In all these scenarios, it's important to note that women are not becoming more masculine in physical appearance on as wide a scale as men who are becoming more feminized. Thankfully, women, as a gender are benefitting from society's advancement through centuries of gender bias all over the world. So, in that aspect they have become involved in a larger variety of ways, now that the doors are open. But, physically there are no masculinity creeping into their biology.
So, what seems to be creating this potentially alarming transition to the human race? The advent of "the pill."
These changes clearly began globally at the same, general time period. It was the time period in which the birth control pill became a standard in the lives of women. These pills literally flush the female's body with an naturally high amount of female hormone, which creates the desired effect of destroying the egg that had descended in hope of fertilization with her body.
The hormones in this process are eventually eliminated from a woman's body through her urine. The urine, over time finds itself into our water system. Water finds it's way into the mouths of men and women everywhere. Scientist are discovering that there are long term effects with this hormonal manipulation and from forcing the human body to operate unnaturally.
So, the guys who were born today, will more than likely have even further reduction to their male sex organs. They'll have more soft tissue on their upper chest and even larger nipples. It could be funny to think about, if you kept your thoughts away from realizing that if this trend continues at the rate it has been, there will likely be a time of mankind where reproducing will no longer be a possibility and the end of man upon the Earth will have been reached. All because of her mad lust for changing every natural system that we can.