Lancet Study Links Climate Change to Rising Physical Inactivity and Premature Deaths by 2050

Key facts

• A study titled Effects of climate change on physical inactivity: a panel data study across 156 countries from 2000 to 2022 was published in The Lancet Global Health.
• The research estimates that climate-driven physical inactivity could lead to 0.47 to 0.70 million additional premature deaths annually by 2050.
• Economic productivity losses due to heat-induced sedentary lifestyles are projected to reach up to $3.68 billion by 2050.
• The study found that every additional month with an average temperature exceeding 27.8 degrees Celsius increases global physical inactivity by 1.44 percentage points.
• In low- and middle-income countries, the increase in inactivity due to temperatures above the 27.8 degrees Celsius threshold is higher at 1.85 percentage points.
• The World Health Organization (WHO) currently recommends adults aged 18 to 64 perform 150 to 300 minutes of moderate-intensity or 75 to 150 minutes of vigorous-intensity aerobic activity per week.
• Global data from 2022 indicates that 31 percent of adults already fail to meet the WHO physical activity recommendations.
• By 2050, global physical inactivity is projected to rise by 1 to 1.75 percentage points due to heat alone under various emission scenarios.
• The study identifies Southeast Asia, the Western Pacific, and the Eastern Mediterranean as the primary hotspots for climate-driven inactivity.
• In India, the mortality rate specifically linked to physical inactivity is projected to reach approximately 10.62 deaths per 100,000 population by 2050.
• Proposed policy interventions include increasing urban green spaces, developing cooling infrastructure, and adjusting work or school schedules to avoid peak heat hours.