There is a lot of anecdotal evidence out there about the benefits of lactation cookies, but not a lot of scientific research. Some women swear by them, while others find them ineffective. It's hard to say for sure whether or not they affect baby, since every child is different and responds to things differently. However, if you're considering trying lactation cookies, it can't hurt to give them a shot! Who knows - you might just find that they help increase your milk supply and help your little one thrive.