If you’ve been on the fence about ditching your gas stove, a new study out of Case Western Reserve University just gave you a pretty compelling reason to stop waiting.
Researchers, led by Dr. Ashwini Sehgal, recruited 85 people in the Cleveland area with poorly controlled asthma and did something remarkably simple: they replaced their gas stoves with electric induction stoves. Then they tracked what happened.
Across every health metric studied, people got better. Not just better — dramatically better.
“Our improvement was about twice as much as you typically see with medical treatment of asthma,” Sehgal said.
The numbers
• Hospital admissions and missed days of work or school dropped by 70%.
• The average asthma control score improved from 2.6 to 1.5 on a scale where a change of just 0.5 is considered clinically significant.
• Participants reported less wheezing, less reliance on rescue inhalers, and fewer nights woken up by asthma symptoms.
• In the 44 homes where indoor air was directly measured, nitrogen dioxide levels dropped by an average of 70% after the stove swap.
That last point matters because it’s the mechanism: gas combustion releases NO2, a lung irritant that inflames the airways and makes existing asthma worse. Take away the combustion, and NO2 levels — and symptoms — fall together.
What’s next
The researchers originally had funding lined up for a much larger study, following over 1,000 households. But federal budget cuts under the Trump administration forced them to scale the project back significantly, cutting off enrollment early.
The obvious next step is a bigger study to confirm these results at scale. But in the meantime, the practical takeaway stands on its own: if you or someone in your home has asthma, replacing a gas stove with an electric one is genuinely worth considering.
If a full swap isn’t in the cards right now, the study’s authors and other researchers point to some simpler interim steps:
• Always run your range hood fan while cooking
• Open a window when you can
• Run an air purifier in the kitchen during and after cooking
None of these fully replace the benefits of switching to electric, but they meaningfully cut your exposure in the meantime.
Full study: Asthma Control Before and After Changing Gas Stoves to Electric Stoves