The study of human sexuality is not a recent interest. The history of sexual medicine is the history of human existence; the thread of sexuality is woven deeply in its fabric.

Infertility has been relatively neglected as both a health problem and a subject for social science research in South Asia, as in the developing world more generally. The general thrust of both programmes and research has been on the correlates of high fertility and its regulation rather than on

After Ritter and Hinkelmann, Kirk and his Colleagues Kirk also reported that in matings where the father is in-compatible with the mother with respect to the ABO groups, the children show a higher frequency of the Hp1 gene.