Interestingly, the makeup of your gut biome con dramatically affect personality. https://www.theatlantic.com/health/archive/2015/06/gut-bacteria-on-the-brain/3

Interestingly, the makeup of your gut biome con dramatically affect personality. https://www.theatlantic.com/health/archive/2015/06/gut-bacteria-on-the-brain/395918/ https://www.theatlantic.com/health/archive/2015/06/gut-bacte... Parasites can also alter your personality. Perhaps they can even turn you into a cat lady/man. http://abcnews.go.com/blogs/health/2013/09/19/cat-lady-parasite-linked-to-permanent-brain-damage/ http://abcnews.go.com/blogs/health/2013/09/19/cat-lady-paras...