Podcast Episode
New research from the University of Hong Kong has comprehensively dismantled this assumption. Analysing data from more than 350 million people across 34 affluent countries, the study found that mortality displacement was uncommon and accounted for only a minor share of pandemic-era deaths.
Clinical epidemiologist Ziyad Al-Aly estimates that COVID may have increased the number of American adults with an IQ below 70 from 4.7 million to 7.5 millionÔÇöadding 2.8 million people requiring significant societal support.
COVID-19 Left a Permanent Mark on Wealthy Nations' Death Rates, Major Study Reveals
January 30, 2026
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A sweeping analysis of 34 wealthy nations has found that COVID-19 caused a sustained increase in mortality that persists years after the pandemic, debunking the theory that the virus merely accelerated deaths among already-frail individuals.
The Mortality Displacement Myth
For years, some health experts theorised that COVID-19 primarily claimed the lives of people who were already very ill and would have died soon anywayÔÇöa concept known as "mortality displacement." This theory suggested that after an initial surge, death rates would actually drop as this vulnerable population had already passed.New research from the University of Hong Kong has comprehensively dismantled this assumption. Analysing data from more than 350 million people across 34 affluent countries, the study found that mortality displacement was uncommon and accounted for only a minor share of pandemic-era deaths.
A Legacy Written in the Brain
Perhaps most alarming are the lasting neurological effects now being documented. A landmark UK study published in The New England Journal of Medicine found that even people who fully recovered from mild COVID infections experienced cognitive deficits equivalent to a three-point drop in IQ. Those admitted to intensive care showed deficits equivalent to a nine-point IQ loss.Clinical epidemiologist Ziyad Al-Aly estimates that COVID may have increased the number of American adults with an IQ below 70 from 4.7 million to 7.5 millionÔÇöadding 2.8 million people requiring significant societal support.
Hearts Under Siege
The virus's assault extends beyond the brain. Research from the University of Southern California found that the risk of a major cardiac event remains elevated nearly three years after infection, even among those who were never hospitalised.The Trillion-Dollar Shadow
The economic implications are staggering. Long COVID's annual global burden is estimated at one trillion dollars, representing approximately one percent of global GDP. In the United States alone, annual lost earnings are estimated at about 170 billion dollars, with individual medical costs averaging around 9,000 dollars per patient.A Vaccine Gap Emerges
Despite this mounting evidence, only about 17 percent of American adults reported receiving the updated 2025-2026 COVID vaccine as of mid-January, raising concerns about ongoing protection against future infections and their cumulative effects.Published January 30, 2026 at 7:32am
