Yes it is designed to induce lactation, and requires maintenance massaging to keep the size you gain. Basically, to grow with this program and stay the size you gain you will be lactating for the rest of your life, or as long as you follow their program instructions I believe. While lactation does cause an increase in size, if you lose control of the lactation you could end up dealing with embarrassing leaking nipples, and there's always the dreaded clogged duct issue you could have to deal with, which from what I've heard is a very painful experience. I was looking into a program that involved inducing lactation before, but this one sounds like it just involves doing massages twice a day or so. The last program I checked out actually involved nipple stimulation by having a person (husband or boyfriend) suck on the nipples as a baby would during the feeding process as many as 4-8 times a day, which can be difficult to follow. Then you also have to deal with the possible leaking breasts if you end up inducing full lactation, which can be embarrassing in certain situations, especially if you have no children, or their all off the bottle. Then like I said there is always the possibility of developing a clogged duct, or more than one which I hear can be a very painful situation. Then on top of all that if full lactation occurs some have the issue I do, where their spouse (partner) is lactose intolerant like my hubby is. I don't want to make him have to deal with the side affects of the lactose in breast milk just to have larger breasts, I'll stick with noogling first.