UK helps children breathe easier

In the UK, the evidence suggests that ultra low emission zones (ULEZ) can help children breathe easier. The most compelling proof comes from a major study on London's ULEZ, which found that it led to measurable improvements in children's lung function. 

Here is a summary of the key findings: 

? Key Health Improvements in Children 

A landmark study published in The Lancet followed over 3,400 children over several years. The results showed that the ULEZ policy had a direct, positive impact on children's respiratory health . 

Faster Lung Growth: Children in the ULEZ had their lung capacity (FEV1) grow by an extra 10 milliliters per year compared to children in a similar area without a clean air zone (Luton) . 

Catching Up: Before the ULEZ, London children had measurably smaller lungs. Over the study period, their lung function recovered to match that of children in the less polluted comparison area . 

Fewer Clinical Issues: The percentage of children in London with clinically impaired lung function fell from 14% to 9% . Teachers also reported that students experienced fewer asthma symptoms . 

?‍?? How the ULEZ Helps: Encouraging Active Travel 

One of the main ways ULEZs improve children's health is by encouraging a shift from car travel to walking, cycling, or public transport, which reduces children's exposure to harmful traffic fumes . 

More Active Travel: One-year results from the CHILL study showed that children in the ULEZ were nearly 4 times more likely to switch from car travel to active modes (walking, cycling, or public transport) compared to children in the control area . 

Sustained Change: The ULEZ group was also much less likely to switch back to car travel, indicating a sustained behavior change . 

?? Important Considerations 

While the benefits are clear, the positive effects of ULEZs are not experienced equally by everyone. Research highlights some significant challenges . 

Inequitable Impact: The benefits can be unevenly distributed. Families who already lived close to their school or had access to affordable public transport benefited more. Those living further away sometimes found that the cost of switching to public transport was a barrier . 

 Long-Term Strategy: The researchers emphasize that while the ULEZ has been a success, air pollution levels are still above WHO guidelines, meaning this is a step forward but not a complete solution . 

 We hope this process is followed soon all over the world to limit pollution. 

 By Jamuna Rangachari