Nina, I have trouble with anxiety too. I've also read that magnesium can help. From my reading on the subject, increasing serotonin levels can reduce anxiety, so finding something that does that can help.

I've been looking into anxiety a lot longer than mercury poisoning (never thought about it as contributing to it) and what I've read is that eating foods that contains trytophan can help reduce it naturally. Turkey, Milk, wheatgerm, are amongst the foods I remember that help the body to produce serotonin - you can probably find a list on the internet by doing a search. 5 Htp supplement can help (but can result in drowsiness, so I never took it). Also St John's Wort is thought to help, but can cause medicines to not work properly etc.

I've read chocolate is also good at increasing serotonin, but only on a short-term basis, which then results in a drop later.

How well these foods go with mercury poisoning, I haven't a clue. I typically eat a lot of chocolate, but that's because I like it and I need sugar (which probably doesn't help my candida).