I did the test as did my two children (before I had ever heard of Andy Cutler of course). None of us had any side effects at all. And I will say that the results came back exactly as I would have predicted. Myself and my youngest were highly elevated (we were both highly symptomatic and I had dental work done when I was pregnant with him) and my other son was borderline (as are his symptoms - some minor attention issues). But I guess we don't know who is going to be the one to react badly so caution is needed. Have you had a hair test yet? I believe you can get one without a physician through Doctor's Data and just see if you have screwed up mineral transport (which I did as well).