~ Food Has Power ~
Candida can be from antibiotics killing off the 'good bacteria' in the gut and the "bad bacteria" overgrowing out of control. Also, steroids, high sugar intake, undigested grains are other precipitants to candida overgrowth.
Candida overgrowth, brain fog are some of the symptoms of high metals. There are a lot of different heavy metal issues in addition to mercury.
I don't know a lot about enzymes. But, I do not believe they help to escort metals.
Vit C flushes are considered beneficial for escorting mercury. I'm not well informed about clay. This thread has more info about clay: http://www.mothering.com/discussions/showthread.php?t=1150081&h...
Btw, I thought of you when I saw this thread today. Curious if you all have had other midline issues. http://www.mothering.com/discussions/showthread.php?t=1045598