You will find that aluminum naturally occurring in various food sources (spinach, potato, tea) far exceeds the minor amount of aluminum that may be picked up by boiling water in an aluminum container. Especially if that container has been well used and has an internal "patina" of oxidation between the raw metal and the water. I'm not saying that aluminum is good for one but I am saying that the amount gained from using aluminum cookware is probably a small fraction of the amount of aluminum ingested form other, less hysterically discussed, sources in the normal course of eating.
May I walk in beauty.