A research project in Ohio, published in The Journal of Allergy and Clinical Immunology: In Practice, set out to investigate whether replacing gas stoves could improve asthma symptoms in 1,200 participants.
However, the project was stopped earlier than planned after its funding ended.
As a result, only 72 households were able to take part, according to The Guardian.
Although the study was much smaller than originally intended, the researchers decided to analyse the data they had collected.
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Air became cleaner
Participants were monitored for four weeks before and four weeks after their gas stove was replaced with an electric one.
At the same time, the researchers measured indoor air quality in some of the homes.
According to The Guardian, nitrogen dioxide levels fell by around 70 percent in the homes where air quality was monitored.
The researchers also recorded fewer hospital visits, fewer sick days, and a reduced need for rescue asthma medication among the participants.
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Results were surprising
The researchers believe the improvements were significant enough that they are unlikely to be explained by a placebo effect alone.
However, they stress that the findings should be confirmed in a larger study involving more participants, The Guardian reports.
The study builds on previous research suggesting that cooking with gas may increase the risk of asthma, particularly in children.
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