A new study published in The Lancet Planetary Health warns that the health consequences of plastic pollution-from fossil fuel extraction to disposal-could more than double by 2040 without notable intervention. Researchers at the London School of Hygiene & Tropical Medicine modeled the impact of various scenarios,finding that the global plastic system may contribute to a loss of 83 million years of healthy life between 2016 and 2040. The study underscores that addressing this growing public health crisis requires systemic change, extending far beyond individual recycling efforts.
The health consequences linked to plastic emissions throughout their entire lifecycle could double by 2040 if immediate action isn’t taken, according to a new modeling study published in The Lancet Planetary Health. This research highlights the far-reaching impact of plastics on public health, extending beyond visible pollution to encompass the entire production and disposal process.
Researchers identified health hazards at every stage of a plastic’s life, beginning with the extraction of fossil fuels – the raw material for over 90% of plastics – and continuing through production, use, and eventual disposal or release into the environment. These impacts range from respiratory illnesses to increased cancer risk and contribute to the broader effects of climate change.
The research team, led by investigators at the London School of Hygiene & Tropical Medicine (LSHTM), used modeling to compare the health impacts of various future scenarios for plastic production, consumption, and waste management between 2016 and 2040.
Specifically, the study evaluated “disability-adjusted life years,” or DALYs – a measure of the overall burden of disease. Researchers analyzed the number of years of healthy life lost due to greenhouse gas emissions, air pollutants, and toxic chemicals released throughout the plastic lifecycle globally.
The model revealed that, under a “business-as-usual” scenario with no changes to current policies, economies, infrastructure, materials, or consumer behaviors, the annual health impacts could more than double, rising from 2.1 million DALYs in 2016 to 4.5 million DALYs in 2040.
Overall, the global plastic system could be responsible for a loss of 83 million years of healthy life between 2016 and 2040, the study estimates. This underscores the significant and growing public health threat posed by plastic pollution.
The team explored alternative future scenarios with varying levels of intervention. They found that isolated measures, such as increasing recycling rates, had limited impact on reducing the overall global health burden.
A comprehensive shift in the entire system – encompassing production, use, and disposal – proved to be the most effective approach, potentially reducing the global health burden of plastics by 43% in 2040 compared to the “business-as-usual” scenario, according to an LSHTM statement.
The research revealed that emissions from the primary production of plastics were the leading cause of health impacts across all scenarios. Reducing plastic production, without substituting it with other materials, yielded the greatest health benefits.
Transitioning to renewable energy sources could alleviate some impacts related to global warming and air pollution, but it wouldn’t address other harmful effects of plastic production and waste management.
“Our research shows that the adverse health effects of plastics go far beyond when a product is bought or put in a recycling bin,” said Megan Deeney, an author of the study.
“We are often blamed as individual consumers for plastic waste, and while we all have an important role to play in reducing usage, our analysis shows that a systemic change, from beginning to end of the plastic lifecycle – production, use, and disposal – is needed.”
The study concludes that more ambitious action from governments and greater transparency from the industry are crucial to curb this escalating global public health crisis linked to plastics.
EFE
