This document discusses demographic environment and demography. It defines demography as the scientific study of human populations, including their size, composition, and distribution over time and space. Demographic data is important for health planning and determining factors like required health services and personnel. Demographic environment refers to demographic factors such as gender, family size, and education that vary between countries and locations. Demography obtains data from sources like censuses, surveys, and records. Growing middle class families are significant as the largest consumer segment and emerging consumption community in a country.