When I realised my mercury toxicity I called my brother on the phone informing him, that I new the reason of his redness in his face and around his scalp. He had one single amalgam filling implanted forty years ago. He did not believe me first that such an old filling might have any significance at all, but he let it removed. He called me a few days later telling me that the redness in his face disappeared. Not simply eased, but disappeared.