The average human life is on the rise. The majority of people nowadays may expect to live into their sixties or beyond. Both the global population as a whole and the proportion of persons aged 60 or older are expanding significantly. By 2030, one in six humans on Earth will be 60 or older. It is expected that the percentage of the world's population that is 60 years old or over will rise from 1 billion in the year 2020 to 1.4 billion over the subsequent decade. By the year 2050, people aged 60 or older will make up 20% of the total population of the globe. (2.1 billion). Between the years 2020 and 2050, it is expected that the number of individuals aged 80 and over would treble, going from 168 million to 426 million throughout the globe. Even Although the process of population greying traditionally started in countries with high incomes (for instance, thirty per cent of Japan's demography is over sixty years old), the most significant change is now taking place in countries with low and intermediate incomes. It is expected that by the year 2050, countries with low and moderate incomes would be home to two-thirds of the world's elderly population.