Even though sanitation was es

A preference for sons or for more sons than daughters has been documented in several countries in the world.

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

The expectant and lactating mothers are considered as nutritionally vulnerable group especially in the developing countries of the world. Due to nursing process mothers are subjected to nutritional stresses.

In the last decade, several international and national movements have focused their attention, on the long neglected areas of women's reproductive health.

Breastfeeding and lactational amenorrhoea play a unique role in child health, birth spacing and fertility regulation.

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.