Aging population is a world trend. It is predicted that the number of people aged 65 and older will be more than double in 2050 in the world. Currently Japan is the oldest country. One in 10 are 80 or older, and 30 % of the population are 65 or older in Japan. According to the list of countries on the percentage of people 65 or older reported in 2021, Japan ranks top, followed by Italy, Finland, Portuigal, Greece. But in 2050 Hong Kong is predicted to be in the first place, then come Korea, Japan, Italy and Spain.
Aging population affects business. For the diaper market adult diaper caught up with baby diaper in 2019 and will be more than 1.5 times larger in 2024. There is a company which gave up the production of diaper for baby to focus on adult. Other product for senior citizens is a teapot that sends email to their relative's address when in use.
Average aging rate is predicted to be fastest in Europe, and slowest in Africa.