Ageing population has become a major concern especially in developing and middle income countries that are experiencing rapid shift from high mortality and high fertility to much reduced fertility and greater longevity. Nigeria has the highest number of elderly people in the sub-Saharan Africa. Available records show that elderly population in Nigeria will increase from 6.4 million in 2005 to 11.5 million in 2025 and 25.5 million in 2050.