It is important to understand the social, physical, and administrative environment in which the grassroots components of a health program function and provide services.

Acceptance and sustained use of family planning especially of modern spacing methods have generally been low in developing countries particularly in India. The use rate for modern spacing methods was only 6 per cent among the eligible couples in India in 1992 (IIPS, 1995).

In the year 1950, injectable contraceptives were developed (containing only progestin). For the treatment of endometriosis and endometrial cancer as well as of painful menstrual periods, (dysmenorrhoea), excessive hair growth (hirsutism), and bleeding disorders, progestins were finally used.

All five countries of South Asia, containing over one-fourth of the developing world's population, increased the effort levels of their national family planning programs over the 17 years from 2 to 1989.

The effect of Sesbania sesban seed powder on genital organs and fertility of female albino rats was studied at doses of 100, 250 and 400 mg/kg/day for 30 days.

The search for explanations for the high rate of fertility in India has led many to theorize the link between poverty and fertility. Several micro-studies have affirmed the hypothesis of positive association between poverty and fertility.