Are Toxoplasma -infected subjects more attractive, symmetrical, or healthier than non-infected ones? Evidence from subjective and objective measurements.

, may produce changes in the appearance and behavior of the human host, either as a by-product of the infection or as the result of the manipulation of the parasite to increase its spread to new hosts. Taken together, these results lay the foundation for future research on the manipulation of the human host by sexually transmitted pathogens and parasites.