We are all ageing – everyday of our life. Sri A. P. J. Abdul Kalam was 75 years old when he completed his tenure of The President of India. Every one of us started to age before we were born and we continue to do so throughout our entire life. Ageing of the population is an established phenomenon in the developed countries and also in many developing countries. Life expectancy has increased sharply this century, and is expected to increase further with advancement in healthcare, science and technology. Therefore, the number of people reaching old age is increasing.
According to World Health Organization (WHO), currently there are 580 million people in the world who are aged 60 years or older. This number is expected to rise to 1,000 million by 2020, which will be 75% increase compared to 50% for the total population of the world.
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