<>>>We did do the hair strand some other tests for heavy metals but I didn't find them real productive because the results don't seem to compliment each other very well (they all tell different things). <>>>

You are wise to be cautious with chelation, not because chelation is a bad thing, but chelation without understanding is certainly not a good thing. The test is not meant to be interpreted literally, but rather how the elements are ratioed to another and it's the "counting rules" that provide 'meaningful' information. For example, the fact that mercury is not found in the hair test does not necessarily mean that there is no mercury in the body, but rather that the body is not excreting it due to a blocked ability caused by the presence of mercury...or that there is no mercury present. Which answer it is depends on the ratio of other elements. What company ran the test? If it's Doctor's Data, then the book "Hair Test Interpretation" by Andrew Cutler, PhD, P. E. is very helpful.

<>>>I think the diet is really the first thing though, get them on a couple supplements, like Cod Liver Oil, vitamin D if they are sick a lot, a good multi vitamin (nordic berries are our fav) to get give them a boost to get through it and then go for the elimination diet.<>>>

For what it's worth on the Vitamin D use, the Vit D found in supplements (and food) is not an actual vitamin but a seco-steroid and like any steroid, can reduce inflammation and inhibit the innate immune system. It is the reduction of inflammation and subsequent reduction of symptoms that people think this is a miracle "vitamin" but I am personally concerned that the long-term use of it may create bigger problems down the line. I am well aware that I am in the extreme minority of people with this opinion and as with any opinion...take it or leave it!
http://mpkb.org/home/pathogenesis/vitamind
http://mpkb.org/home/food/vitamind

Anna in MD