Entries in hormonal contraceptive (2)


Can Using Hormonal Birth Control Affect the Health of Future Children?

When choosing a partner to have children with, it is only natural to desire “Prince Charming” or “Cinderella,” who may pass on their beneficial genetic qualities to future kids. Given that better genes increase the offspring's survival and reproduction chances, mechanisms that detect “genetic quality” should have evolved to lead people to be sexually attracted to “knights in shining genes.”

One such cue for mate suitability is odor, which signals compatibility between potential mates' immune systems. Specifically, odor indicates the extent of overlapping between potential mates' immune systems, such that more attractive odor signals less overlap between mates' immune systems. The larger the dissimilarity between mates' immune systems, the more threats the immune system can combat.

Click to read more ...


Pill Use and Mate Retention Tactics: Blame the Estradiol

image source: static.oprah.comThe majority of American women have used a hormonal contraceptive. According to a recent study, women taking hormonal contraceptives, and their male partners, display more “mate retention” tactics (i.e., doing things to keep their partners from straying, such as looking especially sexy or showcasing resources) compared to women, and male partners of women, who do not take hormonal contraceptives. Analyses revealed that it was the synthetic estradiol rather than progesterone that likely causes these effects.

Welling, L. L. M., Puts, D. A., Roberts, S. C., Little, A. C., & Buriss, R. P. (2012). Hormonal contraceptive use and mate retention behavior in women and their male partners. Hormones and Behavior, 61, 114-120.