Cat owners, breathe easy. Your pet does not put you at risk for mental illness | health and fitness | Hindustan Times
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Cat owners, breathe easy. Your pet does not put you at risk for mental illness

Cats are the primary host of parasite Toxoplasma Gondii (T Gondii), which is linked to mental health problems such as schizophrenia. But the new study says cat ownership during pregnancy or childhood may not pose a direct risk for psychotic symptoms.

health and fitness Updated: May 07, 2017 13:53 IST
PTI
Despite the findings, researchers advise that pregnant women should not handle soiled cat litter in case it contains T Gondii.
Despite the findings, researchers advise that pregnant women should not handle soiled cat litter in case it contains T Gondii.(Shutterstock)

They may spurn your affections depending on their moods, but cats pose no risk for causing for mental illnesses in their owners. Contrary to previous research, a new study shows that cat ownership during pregnancy or childhood may not pose a direct risk for psychotic symptoms. The findings cast doubt over suggestions that people who grow up with felines are at higher risk of mental illness.

Recent research has suggested that cat ownership might contribute to some mental disorders, because cats are the primary host of the common parasite Toxoplasma Gondii (T Gondii), itself linked to mental health problems such as schizophrenia.

However, the new study by researchers at University College London (UCL) in the UK suggests that cat ownership in pregnancy and childhood does not play a role in developing psychotic symptoms during adolescence.

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The study looked at nearly 5,000 people born in 1991 or 1992 who were followed-up until the age of 18. The researchers had data on whether the household had cats while the mother was pregnant and when the children were growing up.

“The message for cat owners is clear: there is no evidence that cats pose a risk to children’s mental health,” said lead author Francesca Solmi from UCL.

“In our study, initial unadjusted analyses suggested a small link between cat ownership and psychotic symptoms at age 13, but this turned out to be due to other factors.

“Once we controlled for factors such as household over-crowding and socioeconomic status, the data showed that cats were not to blame. Previous studies reporting links between cat ownership and psychosis simply failed to adequately control for other possible explanations,” said Solmi.

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The new study was significantly more reliable than previous research in this area since the team looked at families who were followed up regularly for almost 20 years.

This is much more reliable than methods used in previous studies, which asked people with and without mental health problems to remember details about their childhood. Such accounts are more vulnerable to errors in recall which can lead to spurious findings.

Previous studies were also relatively small and had significant gaps in the data, whereas the new study looked at a large population and was able to account for missing data.

The study was not able to measure T Gondii exposure directly, but the results suggest that if the parasite does cause psychiatric problems then cat ownership does not significantly increase exposure.

“Our study suggests that cat ownership during pregnancy or in early childhood does not pose a direct risk for later psychotic symptoms,” said senior author James Kirkbride from UCL.

“However, there is good evidence that T Gondii exposure during pregnancy can lead to serious birth defects and other health problems in children. As such, we recommend that pregnant women should continue to follow advice not to handle soiled cat litter in case it contains T Gondii,” said Kirkbride.

The study was published in the journal Psychological Medicine.

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