Thailand is quietly establishing itself as a global epicentre of longevity. With around 45,000 citizens aged 100 or over, the country ranks fifth worldwide for its centenarian population, after Japan, the United States, China and India — a testament to improved healthcare, better nutrition, and rising public awareness of healthy ageing.
Yet beneath this positive statistic lies a growing welfare dilemma. While today’s centenarians thrive thanks to traditional extended families, future generations face isolation and financial insecurity.
The core concern, says Asst Prof Nattapat Sarobol of Thammasat University’s Faculty of Social Administration, is the widening gap between the lived experience of the oldest generation and the demographic reality awaiting their children.
“This makes us think that we should be concerned about how centenarians in the future will be able to live alone,” she said.
The shift is prompting a national re-evaluation of retirement, self-reliance and social defence mechanisms.
Family support fades
Her team conducted research among 101 centenarians to explore their living conditions, lifestyles and sources of happiness. The study found that being surrounded by family was a key contributor to their long lives.
“Most centenarians described happiness as deriving from simple pleasures — spending time with children and grandchildren, living in modest but comfortable homes, and feeling useful to their communities.
“Importantly, a sense of pride was a consistent theme: participants valued being able to care for themselves and contribute to society, even in small ways,” she said.
However, she warned strong family support systems may not endure much longer.
“Thai families are changing,” she said. “Where people once lived together and supported one another, we are now seeing increasing isolation. The question is: how will future generations of 100-year-olds live when family support declines?”
The implications extend beyond emotional well- being.
Without family support, older adults may struggle with basic daily tasks, from cooking and cleaning to accessing healthcare and managing finances. This could lead to increased dependence on state services, which are already under pressure.
Shifting structures
The research paints a sobering picture of what lies ahead. Japan’s number of centenarians is expected to surpass 100,000 soon, and Thailand is following a similar path, she said.
Children born after 2016 are projected to live well into their 80s or 90s, with many reaching 100. Yet the social conditions that support older people are fading fast.
Elderly Thais have often relied on large families for care. Today, smaller families and lower birth rates mean that many older adults may have no children to depend on.
“The study shows our centenarians generally have no debt or savings,” she said. “They survived not because of financial planning but because of family support. That system is breaking down.”
She said the traditional life pattern — 20 years of study, 40 years of work, and 15 years of retirement — is now obsolete.
Modern life expectancy has shifted the pattern to 20-40-30, meaning people could live 30 years or more after retirement, and in many cases up to 40 years.
This longer lifespan has prompted debates about extending the retirement age. But as Asst Prof Nattapat said, the issue goes beyond economics.
“It’s not just about money or keeping people employed longer,” she said. “It’s about redefining what life after 60 means. We must encourage people to stay active, capable and self-reliant for as long as possible.”
The economic burden
Nonarit Bisonyabut, Senior Research Fellow at the Thailand Development Research Institute (TDRI), said the phenomenon was part of a global trend.
“Advances in medicine have made people live longer, but with fewer children being born, the proportion of elderly is growing rapidly,” he said. “It creates what I call ‘the burden gap’ — fewer working-age people supporting more elderly dependents.”
He said that, in the past, several siblings would share the responsibility of caring for ageing parents.
“Today, one child may have to care for both parents and even in-laws — four people in total,” he said. “This is a heavy financial and emotional load.”
A concerning number of older people are already living alone. Millions of Thai households now consist solely of elderly residents with no younger relatives to support them. For these individuals, the risk of poverty, loneliness and health problems increases sharply.
Mr Nonarit also warned that while extending retirement might ease the pressure, it cannot solve everything.
“The key is not merely to push retirement later but to create policies that help older adults work as long as they wish and are able,” he said. “We need to match older workers with roles that suit their experience and physical capacity.”
He added that rising household debt and competing government priorities compound the problem.
“The state budget is already stretched thin — covering infrastructure, defence, education and healthcare. There’s simply not enough to guarantee comprehensive welfare for all elderly citizens,” he said.
Preparing for the future
The Department of Provincial Administration says Thailand now has about 45,561 people aged over 100, a big increase from 36,402 just a year earlier.
This rapid rise highlights Thailand’s transformation into one of the world’s leading longevity nations — but also underscores a growing welfare challenge.
Experts warn that if current trends continue, Thailand could soon mirror Japan, where the elderly often live alone and die unnoticed.
However, Thailand faces an even greater risk: while Japan’s elderly may lack companionship, they generally have financial security. Thailand’s older citizens may face both loneliness and poverty.
“Japan is about 30 years ahead of us in this ageing trajectory,” said Mr Nonarit. “We are heading in the same direction, but with fewer safety nets.”
Both scholars stressed the need for long-term care systems that combine family, community and government support.
They also want policies that allow retirees to remain economically active, such as flexible hours, and incentives for businesses to hire and retrain them.
“Active ageing should become the new norm,” said Asst Prof Nattapat.
“Even if one lives to 80 or 100, the goal is not just to live longer, but to live better. Society must adapt to keep older people engaged, valued and self-sufficient.”