Although global life expectancy returned to pre-pandemic levels in 2023 — 76.3 years for women and 71.5 for men — researchers warn of an “emerging crisis” among younger populations. The findings, published in The Lancet by the Institute for Health Metrics and Evaluation (IHME) at the University of Washington, highlight a troubling rise in deaths among young adults, particularly in North America.
Covid-19, once the leading cause of death in 2021, dropped to 20th place in 2023. Heart disease and strokes have again become the top killers worldwide. The causes of death vary by region: in North America, drugs, alcohol, and suicide predominate; in sub-Saharan Africa, infectious diseases and road accidents remain the deadliest threats.
High blood pressure, smoking, cholesterol, diabetes, and obesity continue to place the greatest burden on human health worldwide.
The study also found that chronic diseases such as heart conditions and diabetes now account for two-thirds of all health issues, while mental health disorders are surging.
“The increase in deaths among young adults, particularly in North America, is closely linked to the rise of anxiety and depression in younger generations, especially among women,” said Dr. Christopher Murray, director of the IHME.
Public health experts warn that unless mental health, addiction, and prevention policies are urgently strengthened, the “emerging crisis” could undermine recent gains in global longevity.
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