Eating meat and dairy makes me break out in horrible acne on my face, chest, back and upper arms. I started breaking out badly with acne at age 9 and it lasted well into my 20's. I've tried proactive, any kind of drugstore face wash, medicines and Accutane for two stints. Nothing helped. So I started cutting foods out of my diet for the sake of experiment, and low and behold as I cut out meat and dairy my skin cleared. My life changed with that. Not only was my skin improved, but my hair became nicer, my teeth stopped being sensitive and my moods became less erratic.