Toxoplasmosis has been pointed out as a strong indicator whether or not someone is Rh negative. Both, Rh negatives and Rh positives, appear to be affected, but in very different ways.
Rh negatives tend to suffer strongly from a loss of coordination which can lead to increased risk when operating machinery. Rh negatives tend to also experience a boost in mental performance showing in higher IQ test results among Toxoplasma-gondii-infected Rh negatives vs. uninfected Rh negatives.
In Rh positives, being infected tends to lower IQ scores.
Many reports have lately associated Toxoplasmosis with risk-taking and entrepreneurship. ABO and Rh factor related details have not been published in such articles.
fwiw, i tend to handle stress better than anyone around me – this includes when i was a child. my age period from ~14 -19 was generally an awful & challenging experience for me (existential depression and lots of other, jokingly, fun-stuff). it was incredibly stressful. how well one handles stress should have lots to do w/ how happy & healthy one is. regarding Toxoplasmosis, it still looks to me like it’s best to try to avoid getting it. if one has it, well then, make the best of it. having a well functioning immune system still looks important once again for this dealing w/ this parasite.