I looked up different ways that we can on our own increase our prolactin levels. It seems that there are alot of things on the web on how to decrease your prolactin to achieve conception to start pregnancy, but not a ton on increasing it. . Prolactin will increase your milk when you are breastfeeding. While I was looking, I found the following article to list the things that can cause an elevation in prolactin. The article is about Galactorrhea, which is too much breast milk. This is caused by too much prolactin, so it gives information about what raises it. Further down the article in the first chart, it lists the things that can cause Galactorrhea by increasing your prolactin levels and the things that can inhibit it. In Table 2 further down (not table 1), it lists medications and herbs that directly can cause your prolactin levels to increase. Kind of interesting.

.......... Don't know how these things pertain to men and women differently.

http://www.aafp.org/afp/20010501/1763.html

I also looked up which foods can increase prolactin levels, too many individual articles to quote. But Beer can increase prolactin levels as well, lol. I've always heard that drinking beer can increase your breast size, lol. Now I know why.