Hi Garcia! Yes, as far as I know foil does contribute to aluminium contamination.
I too would like to get a hair analysis. Where did you send yours? I've been looking at a few different places. Titanium is in so many things. Look at your food labels and beauty product labels and of course it's also in dental materials.
I honestly believe heavy metals are the cause of Candida. The more reading I do, it appears that our bodies defense for this buildup is Candida. There is just so much info out there and everything has a link to something else. Kind of hard to pinpoint something exactly.