I don't know, I read about that when getting one and came to the conclusion it was tiny amounts.

There is little evidence that normal exposure to aluminium presents a risk to healthy adult, and there is evidence of no toxicity if it is consumed in amounts not greater than 40 mg/day per kg of body mass. Most aluminium consumed will leave the body in feces; most of the small part of it that enters the bloodstream, will be excreted via urine. (Wikipedia)

I'm 70 kg, so, so 2.8 g per day is my limit. If the pot leeched that much per day it would disappear within a year.

Stainless is pretty dope though.