Scientists stunned by children's lung recovery in ultra low emission zone
Scientists are reportedly "stunned" by the rapid recovery and growth in children's lungs in London following the implementation of an Ultra Low Emission Zone (Ulez). This study provides compelling new evidence that environmental policies targeting air pollution can significantly improve public health outcomes, especially for developing children. The findings offer a strong argument for urban clean air initiatives and their measurable impact on quality of life.
The Lowdown
A recent study has revealed a remarkable and unexpected recovery in the lung health of primary school children residing in London's Ultra Low Emission Zone (Ulez). Researchers observed a significant acceleration in lung growth among children whose development had previously been stunted by air pollution, bringing their lung capacity up to par with children in less polluted areas.
- The study tracked over 3,400 primary school children in London and Luton, monitoring their lung function annually over five years.
- Before the Ulez's 2019 introduction, London children exhibited smaller lung capacities compared to their peers in Luton.
- Post-Ulez implementation, London children's lung growth notably accelerated, allowing them to "catch up" to the lung capacity levels of the control group in Luton.
- Prof. Chris Griffiths, a senior author, expressed being "absolutely stunned" by the speed and extent of this recovery.
- The proportion of London children with "clinically impaired" lung capacity decreased from 14% to 9%, indicating tangible health improvements.
- Researchers linked these improvements to a faster decline in nitrogen dioxide exposure in London, attributed to Ulez.
- The study builds upon the understanding of air pollution's severe impacts, recalling the case of Ella Adoo-Kissi-Debrah, whose death had air pollution listed as a cause.
- While external experts lauded the study's rigor, they also suggested considering additional factors like the Covid-19 pandemic's impact or changes in active travel.
- Researchers cautioned against complacency, noting that air pollution in both cities still exceeds WHO guidelines, underscoring the ongoing need for environmental action.
These findings highlight the profound positive impact that targeted clean air policies can have on the most vulnerable populations, offering a powerful evidence base for cities worldwide grappling with the health consequences of urban pollution.