Phenotype screens off genotype, as the genetic saying goes. Infection reduces Openness? Well, do you have some reason to want to increase your Openness? (Are you also looking into acquiring some psilocybin, which might actually be cheaper than treatment if Morendil is generalizable about it taking 'months' ?)
Slower reactions - would that significantly improve your life? I'm a cat person so I may be infected, but I can't say I often think (outside of taekwondo) 'I wish I had 10% faster reflexes!'
The greater jealousy thing may be an issue.
It explains 10% of the variance. It can take you from the 45th percentile to the3 55th. It's probably decreases it by less than 10%.
Toxoplasmodi gondii is a parasitic protozoa who's primary host is cats but also infects other mammals, primarily mice and rats but including humans, as part of its life cycle. Infection by Toxoplasmodi gondii is called Toxoplasmosis and may be acute (flu like symptoms) or latent.
Toxoplasmosis is extremely common. Worldwide, about 30% (US 11%; France 88%!) of people about of people have Toxoplasmosis.
Toxoplasmosis is known to cause behavioral changes in rats:
Observational studies suggest that latent Toxoplasmosis may also cause behavioral changes in humans (source paper). The observed differences between infected people and non-infected people include: