In 2017, Lancet scientists forecast life expectancy across 35 industrialized countries using 21 statistical models. 13 years later, South Korean women are projected to average about 90.8 years, potentially setting a historic human longevity record

A life expectancy milestone that once seemed almost impossible is now within sight. South Korean women are projected to reach an average lifespan of about 90.8 years by 2030, according to a 2017 study published in The Lancet. The forecast came from an analysis of 35 industrialized countries using 21 statistical models. If the projection holds, South Korean women could become the first national female population to average more than 90 years.

The reasons behind the projection are less dramatic than the number itself. Researchers pointed to broad healthcare access, cardiovascular health, low smoking rates among women, body weight and strong childhood nutrition.

What did the Lancet study predict?

The research was led by Vasilis Kontis, Majid Ezzati and colleagues at Imperial College London, working with the World Health Organization. Rather than relying on a single statistical model, the researchers used 21 models and combined their results.

The models projected that South Korean women could reach an average life expectancy of roughly 90.8 years by 2030. Korean men were also projected to lead their category, with an estimated life expectancy of 84.1 years.

France, Spain and Japan followed South Korea among women, with projected averages closer to 88 years.

But the 90-year figure was never presented as a certainty. The model calculated a 57 percent probability that South Korean women would cross the 90-year threshold and a 90 percent probability that they would exceed 86.7 years. That distinction matters. The projection points toward a possible historic milestone, rather than guaranteeing one.

Why is South Korea approaching this milestone?

For much of the 20th century, an average national life expectancy of 90 was considered extremely difficult to achieve. The Lancet researchers noted that some demographers had viewed the figure as virtually unattainable around the beginning of this century.

South Korea's progress was not attributed to a single medical breakthrough. Instead, the study pointed to years of improvements affecting large portions of the population.

One major factor is healthcare access. South Korea's National Health Insurance Service has covered essentially the entire population since the late 1980s.

Researchers also identified strong blood pressure control, relatively low average body mass compared with other wealthy countries, very low smoking rates among women and solid childhood nutrition as important factors.

CBC News reported on the importance of childhood nutrition, while Majid Ezzati highlighted the broader role of equitable access to health knowledge. Speaking to CNN, he said: “an equitable way of taking up this knowledge has been the driver.”

The pattern is notable because none of these factors is particularly exotic. They are basic aspects of public health that accumulate over decades.

Could cardiovascular health be the key?

Blood pressure stands out because cardiovascular disease remains a leading cause of death in wealthy countries, while high blood pressure can develop without obvious symptoms.

South Korea's projected longevity advantage is linked substantially to managing cardiovascular risk at a population level.

The larger lesson from the research is that health improvements do not necessarily have to come from dramatic medical discoveries. Consistent attention to weight, smoking, nutrition and blood pressure can have an effect when those improvements reach a large share of society.

The study's findings also challenge the idea that longevity is determined entirely by individual choices.

Why does the wider environment matter?

The projections show a striking difference between South Korea and the United States.

By 2030, American women were projected to have an average life expectancy of 83.3 years, while American men were projected at 79.5 years. Both countries have advanced healthcare systems, yet the projected outcomes were considerably different.

The comparison points toward the importance of how widely health advantages are distributed.

Access to healthcare, the ease of getting a check-up, opportunities for movement, smoking habits among people nearby and everyday food choices can all shape the environment in which people live.

The South Korean projection therefore isn't simply about individual discipline. It reflects what can happen when healthier conditions become accessible to much of the population over a long period.

What could the projection mean for human longevity?

The most striking part of the research may be that the 90-year threshold once regarded as nearly unreachable is no longer purely theoretical.

The projection suggests that major gains in life expectancy can emerge from gradual improvements rather than one spectacular breakthrough.

It also highlights the importance of ordinary health measures. Sleep, movement, weight, avoiding smoking and keeping track of blood pressure may sound mundane, but the research points toward the cumulative effect of such factors.

For people outside South Korea, the findings offer another perspective on longevity. A population does not necessarily need a revolutionary treatment to live longer. Improvements can build slowly when healthcare and health knowledge become easier to access and healthier choices become easier to maintain.

South Korean women reaching an average life expectancy of about 90.8 years by 2030 remains a projection, not a confirmed historical record. But the possibility itself marks a significant shift in how researchers think about the limits of human longevity.

FAQs

Could South Korean women average 90 years by 2030?
Yes, the Lancet model projected about 90.8 years.

What is driving the longevity gains?
Healthcare access and better cardiovascular health are key factors.