Extra Years, Less Health: The Global Health Paradox

Global life expectancy has risen to an average of 73.8 years, a significant increase over the past century due to medical advancements and reduced mortality. However, this progress is not uniformly matched by improvements in healthy life expectancy.

A major international study published in The Lancet Public Health found that people are spending a larger proportion of their lives in poor health, with non-fatal conditions being key drivers. Musculoskeletal disorders, mental health issues, and sensory impairments contribute to this growing gap.

Researchers noted that in 2023, people globally spent an average of 14.5% of their lives in poor health. Wealthier nations generally had a higher percentage of life lived in poor health, with the United States, Australia, and Canada showing the greatest disparities.

The study's authors stress that health systems must shift focus from merely extending lifespan to enhancing 'healthspan'—the period of life spent in good health. This requires greater investment in prevention, long-term disease management, and chronic care.

Addressing the risk factors such as high BMI, malnutrition, tobacco use, and air pollution is crucial. For high-income regions, drug and alcohol use are significant contributors, while unsafe sex is a factor in sub-Saharan Africa. Improving healthy ageing could yield substantial social, health, and economic benefits.