Biological Father's Scent Delays Daughter's Puberty
The scientists also found that girls who lived with half or step brothers also experience earlier puberty. Additionally, girls who live in cities, compared to those who live in rural areas, also experience slightly earlier sexual maturity. This was the case in both groups regardless of whether or not the biological father lived in the home.
The cause of these differences appear to be inhibitory chemical signals or inhibitory pheromones. Pheromones also cause girls and women who live together to menstruate at approximately the same time of the month. Scientists at Penn State believe this is an evolutionary step that was originally developed to prevent inbreeding among families because it is a phenomenon that is seen across the board in rodents and most other animals.
Comments
They notice ONLY a 3-month earlier onset of menses in homes without biologic fathers? That seems like such a small and trivial difference. If it was 3 YEARS, then I’d say this so-called “study” was worth something….but, 3 MONTHS? Yeah..that 3 months could have prevented a whole lot of inbreeding. How silly and an yet another absolute waste of research dollars that could be better spent on cures for cancer or for furthering stem cell research,etc.
My 2 daughters lived with thier biological father from mid ‘98 until summer of 2005. They were 14 1/2 and 12 when they came to live with my fiance and I. This past August the oldest began her first period on Saturday morning and the youngest started 48 hrs later on Monday morning.