hi mama, re the selenium, if she likes brazil nuts, have her eat 2 a day.
here's a whole list of other food sources (brazil nuts are absent - presumably the folks at 'world's healthiest foods' are not nut fans)
http://www.whfoods.com/genpage.php?dbid ... e=nutrient
also re gluten free.. you can either bust your butt to get rid of gluten, or ensure your diet contains enough zinc.
here is an example of a problematic study with some really questionable conclusions made http://www.theprofesional.com/article/2 ... f-1056.pdf
for example, the abstract states that in celiac children "Results: Serum Zinc was below the reference range in 68%." 68% of celiacs? or does that include the healthy controls? let's do the math:
zinc level in celiac subjects was 58.85 +/- 4.03. that's in ug/dl. so to get umol/L you have to multiply by 0.153. which means that none of the celiac patients cracked 10 umol/L. the closest they got was 9.62.
after gluten free diet they got up to 84.77±4.31 which is the 12-13 umol/L range, a far cry from the optimal 18 seen in multiple other studies.
healthy controls had a wider spread, ie 11-13 umol/L range before the diet and 12-14 umol/L range after. because of the overlap, the increase did not achieve statistical significance and hence the conclusion "Control group did not show any significant change in their trace mineral levels ."
BUT, it did increase. just not as much as the kids who started out way lower.
at any rate by my standards 100% of patients AND controls were well below optimal zinc. and the omission of gluten from the diet increased serum zinc in all groups. the effect was most pronounced in those with the lowest initial zinc levels.
i'd say increasing dietary sources of zinc would be pretty important, and ensuring gluten foods are not so dominant that zinc nutrition is impaired.
world's healthiest high zinc foods (edit: sorry i pasted the wrong link here originally):
http://www.whfoods.com/genpage.php?tnam ... t&dbid=115