Do we have free will?

Or are we controlled by parasites?

“Recent claims go so far as to argue for a role of T. gondii in shaping distinct cultural habits, depending on the rate of infection in the population. A prospective study tracking the road safety in Czech recruits during their 18 months of compulsory military draft found a rate of accidents six times higher in affected drivers. Are the young men with toxoplasmosis infection simply slowed down? Or do they drive more aggressively?”

(Via Protozoa Could Be Controlling Your Brain | Scientific American.)