Life Expectancy Is Back to Pre-Pandemic Levels, but Healthy Years Lag Behind: What the New WHO Data Shows

You know the scene from every hospital drama: the doctor sits down, takes off the glasses and asks whether you want the good news or the bad news first. The World Health Organization’s latest Global Health Estimates, published on 2 October, come in exactly that format. The good news: global life expectancy has almost fully recovered from the pandemic. The bad news: the years we have gained back are not all healthy ones.

Behind those two headlines sits one of the most comprehensive datasets in global health, covering causes of death and illness from 2000 to 2023. It is worth a closer look, partly because it says a lot about how the world is ageing and partly because it quietly contradicts a good portion of the wellness industry’s marketing.

The numbers in plain language

According to the WHO, global life expectancy at birth reached 73.3 years in 2023. That is almost exactly where it stood in 2019, before Covid-19, when the figure was 73.4 years. So the dent the pandemic left in the statistics has nearly closed.

Healthy life expectancy tells a different story. This measure estimates how many years a person can expect to live in full health, without the burden of disease or disability. In 2023 it stood at 62.8 years, still 0.4 years below its 2019 level. If you do the arithmetic yourself, the gap between the two numbers is about ten and a half years. That is, on average, roughly a decade of life spent with some form of health limitation.

Dr Alain Labrique, who directs the WHO’s work on data, digital health, analytics and AI, put it diplomatically. “Living longer is one of the great achievements of public health,” he said, adding, as quoted by Anadolu Agency, that the next challenge is making sure those extra years are lived in good health. Call it the Dorian Gray dilemma without the magic portrait: the extra years add up. Somebody has to carry them.

The quiet takeover of chronic disease

The second big shift is less dramatic in tone but enormous in scale. Noncommunicable diseases, the long-term conditions such as heart disease, cancer, diabetes and chronic lung disease, accounted for 74 percent of all deaths worldwide in 2023. In 2000 that share was 58 percent. Eight of the ten leading causes of death are now noncommunicable.

Ischaemic heart disease remains the single largest burden, responsible for around 9.5 million deaths in 2023. The WHO also highlights a milestone for low-income countries: for the first time, infectious diseases made up less than half of all deaths there. That reflects real progress against infectious disease. It also means those countries now face the same chronic disease challenges as wealthier nations, often with far fewer resources.

The release also points to regional differences. The mortality risk from diabetes has risen substantially since 2000, particularly in the WHO’s South-East Asia region. The Americas recorded the largest increase in the mortality risk from drug use disorders, while the Western Pacific saw notable declines.

Dementia climbs to fifth place

One figure stands out. Dementia was the 19th leading cause of death globally in 2000. In 2023 it was fifth. The number of deaths attributed to it has tripled since the turn of the millennium.

The WHO release itself does not break down the reasons in detail, so what follows is our interpretation. Dementia mainly affects older people. When more people survive heart attacks, infections and other illnesses that used to end lives earlier, more of them reach the ages at which dementia becomes common. In that sense, part of the rise is the flip side of medical progress. That does not make it less serious. It does mean that families, care systems and health budgets will feel this shift for decades.

The mental health jump

The steepest increases in the report concern mental health. Between 2019 and 2023, the age-standardised burden of depressive disorders rose by about 20 percent. For anxiety disorders, the increase was close to 45 percent. Together, the two conditions accounted for an estimated 110 million years of healthy life lost in 2023.

A quick note on the jargon. The WHO measures this burden in disability-adjusted life years, or DALYs, where one DALY equals one lost year of healthy life. “Age-standardised” means the figures are adjusted so that a population simply getting older does not distort the comparison. In other words, this increase cannot be explained away by demographics.

The timing, 2019 to 2023, overlaps with the pandemic years. The WHO release does not attribute the rise to a single cause, so we will not either. What the data does make clear is that mental health is no longer a side topic in global health statistics. It is one of the main stories.

What this means for you

Here is where we put on our slightly cynical magazine hat. The word “longevity” currently appears on everything from supplements to skincare to luxury retreats. Yet the WHO data points to a far less glamorous set of priorities. The biggest killers are still heart disease and other chronic conditions. On its fact sheet on noncommunicable diseases, the WHO names tobacco use, physical inactivity, harmful use of alcohol and unhealthy diets as the main behavioural risk factors. Not one of them comes in a gold-capped bottle.

That is not a reason to feel lectured. It is a reason to be sceptical whenever someone sells you a shortcut. The unspectacular things, such as moving regularly, not smoking, keeping an eye on blood pressure and taking mental health as seriously as physical health, are the ones that show up in population statistics. If you have questions about your own health, the right place for them is a conversation with your doctor, not a sponsored post.

The real headline

The world has made up most of the ground it lost to the pandemic. That deserves to be celebrated. But the WHO’s estimates shift the question away from how long we live towards how well. With chronic disease dominating, dementia rising and anxiety and depression on a steep climb, the coming decade of health policy will be judged less by the number on the birthday cake than by the quality of the years that number represents. For once, the statistics and your own common sense want the same thing.

This article is for general information only and does not replace medical advice. If you have health concerns, please speak to a doctor or another qualified healthcare professional.