Alpha Androstenol in my research seems to be the cause of some change in menstrual cycle and a large contributor to early puberty in girls. There have been many links between father absence and earlier puberty in girls. I was able to find an article that pointed me to the idea that its the presence of a non biological male in the household and not the absence of a father...
Without Dad little girls grow up too fast
Looking into that further as to what might cause that, alpha androstenol has been found in studies to decrease luteinizing hormone (LH) pulse frequency during the follicula