I’ve had high aluminum levels on hair tests since coming off MinCol and MinCol is high in aluminum. However, it is possible the aluminum is from another source (like sea salt, or produce from deficient soil) or that it is being sequestered in the hair and not causing harm–though it seems like even just transporting it safely out of the body would waste energy and minerals. It’s complex, but I don’t trust the stuff any more. It’s hard to say whether it helped me or not in the long run, but I never felt any obvious harm from taking it for the year-plus that I did.