Well I have my ups and downs too, but didn't feel much difference from taking regularly some 100 mg magnesium per day. While the mercury can be responsible for this random behavior of the adrenals, it could also be the bugs. I know I have them, because an anti-candida diet helped right away, but I may still have other bacterias and viruses, as I get Herx reactions from garlic and alpha lipoic acid (i.e. burning sensation under skin and sweating), but I have no problems with other sulfur containing foods like eggs (these don't kill bugs as efficiently as garlic and ALA do).

The reason why I talk about bugs here is that they give a reason for the adrenals to behave like they do, because when the body gets more aggressive at killing the bugs (especially at night, when the immune system works best, I noticed, and when you supplement with glutathione increasing supplements), the adrenals emit cortisol to make sure that dead bugs don't cause an inflammation.

The reason why everyone should suspect they got more or less bugs like candida, viruses and bacterias around, is that mercury weakens the immune system that gives way for these nasty bugs to thrive in your body. Also stiff and crackling joints (with still no significant problems) are a sign of bugs.