The last century has witnessed a rapid increase in the population of the elderly people in the developed and industrialized countries. This phenomenon is not restricted to the western world only, but many countries such as ours are now feeling the impact of this transaction. This situation could be attributed to a combination of factors such as increase in age, longevity and decreased death rates due to advancement in the field of medicine, improvement of life expectancy at birth, and enhancement in the average span of life.