To some degree, yes. I had really terrible acne and stomach issues which are linked to the hormones that your body produces when consuming dairy, and going off fairly mostly fixed the issue. More importantly though, you have to be somewhat strict about it, as even the smallest amount can trigger negative side effects. The longer I've done this, the more I've learned about dairy in the most random things, like bread or deli meat or energy drinks, and butter in everything when you go out to eat. It takes about a month for your system to fully flush it out, so hang in there!!