The age group between 15 and 64 years is generally considered to be the most economically active, as individuals in this age range are typically in the workforce and contributing to the economy.

The term "Aging" is commonly used to describe the process of an aging population, referring to the increasing proportion of older individuals in a population over time.

Japan currently holds the highest life expectancy at birth in the world, with an average life expectancy of over 84 years.

Age Segregation refers to the concentration of older adults in specific geographic areas, leading to the formation of retirement communities or age-restricted neighborhoods.

Older adults, particularly those aged 65 years and above, are more likely to experience poverty due to factors such as reduced income, increased healthcare costs, and limited access to social support.

Sunbelt Migration refers to the movement of older adults from colder regions to warmer climates, often for retirement purposes.

Increased longevity is associated with a combination of factors, including high levels of education, access to quality healthcare, and an active lifestyle.

Age-Friendly Communities are designed to support the needs of older adults, promoting their independence, participation, and well-being.

Japan has the highest proportion of people aged 65 years and above, with over 28% of its population falling into this age group.

Aging Workforce refers to the increasing proportion of older workers in the labor force, often due to longer life expectancies and changing retirement patterns.

Social isolation, lack of physical activity, and poor nutrition are all factors that can contribute to increased health risks in older adults.

The Geography of Age is a field of study that examines the spatial distribution and characteristics of different age groups across various regions and countries.

The Central African Republic currently has the lowest life expectancy at birth in the world, with an average life expectancy of less than 50 years.

Return Migration refers to the movement of older adults back to their childhood homes, often after retirement or due to changing life circumstances.

Living alone, lack of transportation, and limited social networks are all factors that can contribute to increased social isolation in older adults.