My parents have known from the beginning. Thankfully, they took the time to educate themselves before passing judgement on me, and so far so good. I have been doctor supervised each week, since before I started. They know that most of what I have gotten is from adhering to strict diet and exercise rather than drugs. And it is accepted that it may affect my health in the long run, however I don't drink or smoke, I don't do rec. drugs, and I stay pretty lean and fit year round. They are pretty comfortable with my choice of lifestyle, and so am I.