Arts window on the world

Study has indicated that the body's reaction to diseases can change personality.

This would also imply that pheromone production and recognition may also be affected. The Toxoplasma gondii mentioned in the article is linked to "higher aggregate neuroticism score". I would want to see more directed research, but this sounds like pheromone reception degrading. People are more uncertained and "paranoid" if they aren't really sure what other's pheromones are saying.

However, this implies that any disease may have an effect (positive or negative). Apparently it is the immunities that cause the changes, since once the disease is cured that's all that remains. Now western society has embarked on a massive program of creating disease immunities of many various kinds all across the population. One wonders what this is doing to people. Is this related to the western decline in birth rates? To Alzheimer rates? Who knows?