As a result, measured ratios of estrogen to testosterone in women predict their ratios of gynoid fat to android fat (Singh, 1993, 1995, 2002a,b; Kirchengast et al., 1997). As should also be expected, women with higher ratios of gynoid to android fat are more fertile than their counterparts with lower ratios (Kirchengast et al., 1997; Singh, 1993, 1995, 2002a,b).
2008, Randy Thornhill, Steven W. Gangestad, The Evolutionary Biology of Human Female Sexuality, Oxford University Press, page 114