UW News

Joan Casey


November 3, 2025

UW-led study links wildfire smoke to increased odds of preterm birth

A thin haze of wildfire smoke covers downtown Seattle.

In mid-pregnancy, exposure to any smoke was associated with an elevated risk of preterm birth, with that risk peaking around the 21st week of gestation. In late pregnancy, elevated risk was most closely associated with exposure to high concentrations of wildfire PM2.5, above 10 micrograms per cubic meter.


November 25, 2024

RETRACTED AND REPLACED: UW-led research links wildfire smoke exposure with increased dementia risk

Photo of a neighborhood street with a couple cars driving on it. The air is orange and hazy.

An analysis of the health care records of 1.2 million Southern California residents found that higher long-term smoke exposure was associated with a significant increase in the odds that a person would be diagnosed with dementia. Exposure to non-wildfire PM2.5 also increased a person’s risk of dementia, but to a much lesser degree.  


May 1, 2023

Prolonged power outages, often caused by weather events, hit some parts of the U.S. harder than others

New research found that Americans already bearing the brunt of climate change and health inequities are most at risk of impact by a lengthy power outage.


April 6, 2023

Washington state’s 2021 heat wave contributed to 159 excess injury deaths over three weeks

A record-breaking heat wave that baked Washington state in 2021 contributed to 159 excess injury deaths, according to research led by a UW professor.