Mmmm....kay?
So, apparently semen addictive. Women who have unprotected sex are less likely to get depressed than those who have protected sex or no sex at all. Could it be because these woman are also not the type to worry about their futures/ long term consequences, etc? Because as someone who generally does use protection, when I don't I'm pretty much a big pile of depressive worry for the next week. So, I'm thinking this has more to do with the women than the semen.
I cannot believe I just wrote that last sentence.
http://psychologytoday.com/articles/pto-20021002-000009.html