I was talking to my husband the other day about this post from Microbiology Bytes. I must have gotten two different posts messed up, but this one says that a common brain parasite might change our culture. It acts differently depending on its host.

Women become more intelligent, warm, outgoing, attentive to others, kindly, easy-going.
Men show lower intelligence, novelty-seeking and bad tempered [sic].

So if your hubby gets grumpier, starts doing more risk taking, and isn’t as smart… he might have a brain parasite. If, on the other hand, you are more attentive and kind, you do too.