Three years after the Maui wildfire disaster, many residents continue to struggle with biological, emotional, and social repercussions, according to a newly published study. Researchers emphasize the need for long-term monitoring and intervention following major wildfires.
Nearly 1,000 fires have erupted in Canada's boreal forests, forcing evacuations of several towns and sending toxic smoke drifting into major Canadian and U.S. cities. In Europe, large fires have devastated parts of Britain, France, and Spain, displacing over 250,000 people.
The climate crisis driven by fossil fuel combustion is known to create conditions more conducive to fires worldwide by drying out soil and vegetation. Scientists have long recognized the harmful health effects of wildfire smoke, which can cause severe respiratory and cardiovascular issues.
A recent study shows that microscopic particles in wildfire smoke increase hospitalization risk among older adults, even when they are hundreds of miles away. "The cardiovascular burden of wildfire smoke extends far beyond the fire perimeter and far beyond the day the sky turns orange," said Kai Chen, an associate professor of epidemiology at the Yale School of Public Health.
The current wildfire crisis is further aggravated by heatwaves. Smoke from fires in Washington, eastern Oregon, and Idaho can even reach Florida. Spanish Prime Minister Pedro Sanchez remarked: "The entire Iberian peninsula is suffering the consequences of the climate emergency in a very concrete way."
The Maui wildfire study, led by researchers at the University of Hawaii, found that while living conditions and the economy have improved, many Maui residents still face health issues such as diminished lung function, high blood pressure, and mental health challenges. Nearly half of the adult participants in the study continued to show symptoms of depression, with nearly one-fifth experiencing post-traumatic stress disorder.
"Children may appear resilient on the outside but underneath carry significant emotional and physical impacts," warned Christopher Knightsbridge, a psychotherapist in Lahaina, the coastal town largely destroyed by the wildfire. He stressed that supporting children must include support for the entire family, covering housing, food security, routines, and access to health care.
Experts suggest that authorities in areas affected by smoke should create "clean air centers" where residents can take refuge. A study found that wildfire smoke exposure increased mortality rates by 7% among older adults in southern California over three years, recommending that "activation of public health measures such as clean air centers should not depend solely on smoke intensity, as long-term effects can be harmful even at low levels."
