Rise of the Planet of the Aged

By Joseph Chamie
PORTLAND, USA, Sep 4 2025 – It is becoming increasingly apparent that planet Earth is evolving into the planet of the aged. In nearly every country around the world, the numbers and percentages of the aged, commonly defined as individuals aged 65 years or older, have increased rapidly.

Consequently, the aged have infiltrated offices and institutions and advanced their demands and aspirations. As a result of these developments, they have formed gerontocracies that dictate policies, programs and expenditures, often without truly representing their populations.

In 1950, the aged accounted for only 5% of the world’s population, totaling 128 million. Today, the proportion of the elderly has doubled. The aged now account for 10% of the world’s population, totaling 854 million people. Since 1950, the aged population has nearly septupled!

In 2000, only three countries – Italy, Japan, and Monaco – had more aged individuals than children under 18. However, by 2025, this historic reversal had spread to approximately 45 countries and territories. For instance, in Italy, the percentage of aged individuals compared to children under 18 was 25% versus 15%. Japan shows an even larger demographic reversal, with 30% being aged and 14% being children under 18.

It is projected that by 2050, the aged will make up 17% of the world’s population. By 2080, individuals aged 65 and older are expected to outnumber children under 18, reflecting the evolving rise of the planet of the aged.

Furthermore, by the end of the 21st century, nearly one out of every four human beings living on the planet, close to 2.5 billion people, is expected to be a member of the aged population.

In many countries, including the permanent members of the United Nations Security Council, the aged proportions are even higher by the close of the century. For example, the proportion of the elderly in 2100 is expected to be about 34% in France and Great Britain, and 41% in China (Figure 1).

Source: United Nations.

In 2025, countries like Finland, Germany, Greece, Italy, Japan, and Portugal are expected to have approximately one-quarter of their populations made up of aged individuals. This proportion is projected to grow to about one-third by 2050.

With the rise of the aged, many countries across the planet are being transformed into gerontocracies.

Gerontocracies often have policies that are out of touch with the needs of younger generations. Such societies can lead to legislative stagnation and entrenchment of a political system disconnected from the changing needs of its population.

The aged have infiltrated offices and institutions and advanced their demands and aspirations. As a result of these developments, they have formed gerontocracies that dictate policies, programs and expenditures, often without truly representing their populations

Aged leaders tend to focus on issues primarily affecting their age group, resulting in a political system that overlooks the needs of the majority. For instance, aged leaders spend less on welfare for children and more on benefits for seniors, marginalizing the interests of young people.

These political systems are less likely to address long-term issues, like climate change, food insecurity, environmental degradation, biodiversity loss, and pollution. Gerontocracies can also stifle innovation, reduce scientific research, and create barriers for young researchers to advance in their careers.

In addition to their increasing numbers and proportions of populations, the aged are now living longer than at any time in human history. In 1950, global life expectancies at age 65 for men and women were 11 and 12 years, respectively.

By 2025, these figures had increased to 16 years for men and 19 years for women. Moreover, the global life expectancies of the aged are projected to continue increasing, reaching 21 years for men and 23 years by the end of the 21st century.

Despite the rising aged population, the vast majority of the world’s population, around 90% or 7.4 billion people, are not members of the aged. The median age of the global population in 2025 is 31 years, with about four billion men, women, and children.

In contrast to the majority of the world’s population, the leaders of many countries are aged. Many of these leaders are more than twice the age of their population’s median age and decades older than majority of their citizens (Table 1).

In addition, there is a growing number of government leaders who are aged men, many of whom are well over the age of 70.

As of 2025, women held the position of Heads of State and/or Government in 27 countries, accounting for approximately 14% of the world’s countries. Men also dominated parliament and cabinet minister positions, making up 73% and 77%, respectively.

Potential problems with having aged state leaders include the risks of cognitive decline, reduced mental flexibility, ineffective strategic planning, resistance to new ideas, increased health problems (often concealed), lower energy and stamina levels, and a focus on policies that primarily benefit the aged members of their population.

A particularly worrisome consideration among the aged, especially for the world’s state leaders, is dementia.

The risk of developing dementia among the elderly is significant, believed to double approximately every five years after the age of 65. In some countries, such as the United States, researchers estimate that 42% of the population over the age of 55 years will eventually develop dementia.

Aged state leaders likely have an elevated risk of dementia compared to others in their populations because of their advanced ages, highly stressful roles, and intense and sustained pressures. Studies on aging and political leadership suggest that a significant proportion of leaders over 65 may have impaired executive function. These impairments affect complex decision-making, flexible thinking, and impulse control.

In addition, aged country leaders often strive to leave a lasting legacy. As they near the end of their tenure and lives, these leaders aim to establish systems, capabilities, and strategies that will have a lasting impact reflecting their tenure long after they are gone.

One powerful tool at the disposal of the aged is voting. While the elderly, regardless of age, are eligible to vote in elections, young people, usually below the age of 18, are not eligible to vote.

The elderly are also consistently more likely to vote in elections than younger voters who are busy working and have other time-consuming activities. Aged voters tend to be more conservative, favor the status quo, and have a greater stake in economic issues related to retirement and old-age healthcare.

As a result of the growth of the aged populations, many countries are facing financial challenges when it comes to funding national retirement programs. Several solutions have been suggested to address these issues, such as increasing taxes, raising the retirement age, and limiting retirement benefits.

Despite living longer lives, the aged are opposed to raising official retirement ages, reducing retirement benefits, or raising taxes on the elderly. They are increasingly protesting, resisting, and demanding that retirement ages stay the same and benefits remain intact.

The elderly are concerned about the declining number of workers in the labor force who support retirement and health benefits for them. In response to this issue, the aged have embraced pro-natalist policies, promoted traditional family values, and emphasized patriotism to boost fertility rates that have fallen below replacement levels in more than half of all countries and areas globally. However, these efforts have not yet succeeded in raising fertility rates back to replacement levels.

In conclusion, with their increasing numbers, growing proportions, and a rise in aged world leaders, as well as the establishment of gerontocracies that influence government policies, programs, and spending, Earth is witnessing the rise of the planet of the aged.

Joseph Chamie is a consulting demographer, a former director of the United Nations Population Division, and author of many publications on population issues, including his recent book, “Population Levels, Trends, and Differentials”.