So while this study looks like another blow to the manliness of at home dads, there is really another story to be told. One that most families with a stay at home dad already know, and that is that women aren’t the only ones that biologically adapt to take care of children. Children change our lives, our decision making, and our worries but also change us at a cellular level making us better care givers. What attractiveness is lost with the lowering of testosterone is more than made up for in watching us play and take care of the kids. There is nothing sexier than a man that can change a diaper, make a toddler lunch, and play silly games with his kids.
While testosterone is typically seen as a "male" hormone, it's also present (albeit in much smaller amounts) in women. However, between 4-7% of American women produce too much testosterone in their ovaries, which usually leads to a condition called polycystic ovary syndrome.  Too much testosterone in women can lead to infertility due to lack of ovulation, as well as some embarrassing symptoms like acne, a deepening voice and facial hair growth. Reducing testosterone levels in women is often accomplished with medication, although dietary change can make a positive impact also.