The age boundaries for youth, middle-aged and elderly are as follows: youth is 18-45 years old, middle-aged is 46-69 years old, and the elderly is 69 years old or above.

Before 1994, the international classification standard for population issues was: children between the ages of 0 and 14; the labor force between the ages of 15 and 64; and the elderly over 64 years old.

In ancient China, life was roughly divided into nine stages based on the physiological characteristics of the growth process and ten years as a unit. They are young, weak, strong, strong, young, old, old, old and early.

The ancients divided the age line like this: childhood is under 12 years old, people over 12 years old are called teenagers, 20-year-olds are young people, and some people think that people after 18 are young people, and 30-year-olds are considered young people. We have entered middle age, 40 years old is considered the prime of life, 50 years old is considered the old age, 60 years old, 70 years old, 80 or 90 years old, and 100 years old.

Protection of the rights and interests of the elderly:

Establish a multi-level social security system and gradually improve the level of protection for the elderly. Establish and improve a social elderly care service system that is home-based, community-based, and institutionally supported. Advocate for the whole society to give preferential treatment to the elderly.

The whole society should carry out extensive publicity and education activities on respecting, caring for, and helping the elderly, and establish a social custom of respecting, caring for, and helping the elderly. Youth organizations, schools and kindergartens should provide teenagers and children with moral education on respecting, supporting and assisting the elderly, as well as legal education on safeguarding the legitimate rights and interests of the elderly. Radio, film, television, newspapers, magazines, and the Internet should reflect the lives of the elderly, carry out publicity to safeguard the legitimate rights and interests of the elderly, and serve the elderly.

Reference for the above content: Baidu Encyclopedia-New Age Segmentation