It seems a Dr. Peter Frost now believes blonde hair in women (gene MC1R) may be an indicator of more than just a low IQ and loose sexual morals. It may have, at one time, been an indicator of higher estrogen levels in women with blonde hair and, hence, higher fertility.
In other words, the women that guys are most biologically attracted to are also the most likely to get knocked up. Now that all makes sense from a procreation standpoint, but what if you’re not interested in starting a family just yet?
Well, if this theory turns out to be valid, we’d advise you to avoid screwing true blondes, and instead, stick to blondes with dark roots. Because your genes won’t be able to tell the difference, and your sperm won’t figure it out until it’s too late.