The title says it right. Having a feline pet may affect your mental health to such a degree you might become suicidal. How is the possible? The answer is: Toxoplasma gondii.
The Toxoplasma gondii or toxoplasmosis is a bacterium our feline friends carry. People may get infected with the bacteria most likely when they’re changing the litter box. The parasite is causing major behavioral changes in people, such as bipolar disorder and schizophrenia. A research studied 45,000 women from Denmark and the effects the parasite had on them. Those, who were infected by it, were 1.5 times more likely to show suicidal signs than the ones who weren’t infected by the bacteria.
Another similar study was done on lab rats. Those rats, which were infected, showed high levels of mental illness. Not only did they become fearless of cats, but they also became attracted to the odor of the cat’s urine. It’s not clear what part of the human brain the bacteria is infecting, but it’s clear that the parasite may cause some severe damage in humans.