|Originally Posted by katheek77
Since it's the sperm that determines gender, I don't see why what Mama eats has to do with it?
Because boy sperm and girl sperm behave differently. Boys live short lives, but swim fast, girls live longer but swim slower. So, depending on what kind of CM the woman has will either favor the boy sperm to get to the egg faster or the girl sperm. When we were trying for our first, we were trying to sway the odds for a boy. I also drank Robutussin a couple of days prior to ovulation to increase my CM. Boy sperm thrive on fertile, EWCM, it helps them swim faster and get up there quicker. Not so important with a girl.
ETA: I just remembered something else. When we were trying for DS, I drank a liter of carrot juice every other day from AF to O. I had read that it increases CM, but I just now read that veggie juices are alkalizing, so another factor I added to my sway for a boy the first time.