I think the important thing to remember too, is that everybody's body is different. Some people are more poisoned than others, some eat better than others, some deal with stress better, and we all may have different deificiencies or damage done to organs. So, it's important to know that what works for one person may not work for another or may even harm another.

Your right about that...one way I can tell is by muscle testing. I muscle test everything before I take it and usually is very accurate for me. I perodically retest supplements too...seems to work for me.