Is Stainless Steel Cookware Safe?
For the most part the answer is yes. Just be aware that stainless steel cookware does release low levels of nickel and chromium, especially if you are cooking acidic foods like tomatoes. For most people the release of these low levels of nickel and chromium should not be a concern, but for those who have a nickel or chromium sensitivity or allergy this would be problematic.
As well, any damaged stainless steel pots and pans should be discarded to decrease your heavy metal exposure. Damaged stainless steel pots and pans will release higher levels of nickel and chromium, which you want to avoid. Additionally, the amount of heavy metal leaching will depend on the stainless steel grade, cooking time, cookware use, and cookware care, so I recommend using high-quality, surgical-grade stainless steel cookware, and it’s even better if it’s nickel-free. Stainless steel lined copper cookware is also safe because the copper surface doesn’t come into contact with the food. It's also important to care for your stainless steel cookware properly to prevent it from becoming damaged.
HOW TO CARE FOR STAINLESS STEEL COOKWARE:
To help prevent your stainless steel cookware from becoming damaged it's important to care for it properly. When using cooking utensils, choose those made from materials that won't scratch the surface such as silicone or wood (avoid plastic utensils as they will release hormone disruptors into your food). You should also be sure to clean your stainless steel cookware gently, being careful not to damage the surface of your pots and pans or compromise the integrity of your cookware. If you take these steps your stainless steel cookware should last for a very long time.