A large Swedish study found that having a cat at home does not worsen asthma symptoms in children with allergies.
Researchers from the Karolinska Institute tracked over 30,000 young patients and concluded that asthma severity is similar regardless of cat ownership.
The study followed children aged 4-17, born between 2006 and 2020, starting from 2023. Over two years, they recorded diagnoses, hospitalizations, medication, and lung function tests.
Among participants, 9.4% had a cat. Moderate to severe asthma occurred in 9.6% of children with cats and 10.1% without. Exacerbation rates were 3.3% and 3.5%, respectively.
Scientists suggest that cat allergens are widespread outside homes, so children may be exposed at school or on public transport. The study did not account for specific allergens.
