It is interesting that this regularly pops up on HN. People crave some kind of "aha!" subtle, gotcha explanation for why our health is falling apart, because they desperately need to ignore the quite obvious explanations of air and water pollution.
We mostly use cast iron for cooking, except for cooking anything that is acidic (tomato, lime etc.) for which we use stainless steel. So, got curious if stainless steel reacts with tomato or lime or not, since after all it's a metal, an alloy but metal.
So while I was bored of doing what I was doing, searched and found this, which was new info for me. So, decided to post it..
As simple as that... :)