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1. Canned Tomatoes

Actually, most canned foods are a concern because of what the can is lined with. The lining of almost all canned foods are made with a chemical called bisphenol-A, or BPA.
A study published in May of 2013 by the Proceeding of the National Academy of Sciences showed that BPA actually affects the way genes work inside the brain of rats. Even the FDA agrees that there is a problem with BPA as it is supporting efforts to either replace or at the very least, to minimize the amounts found in canned foods. You know it must be bad when even the very lax FDA is concerned!
Tomatoes are exceptionally dangerous due to their high acidity, which seems to cause BPA to leech from the lining of the can into the tomatoes themselves. The level of BPA can be so high in fact; you should seriously consider not feeding them to children. Due to FDA laws, there are no standards for labeling BPA so simply because a can does not say it has it does not mean that it does not contain BPA. Be safe and avoid cans. Cook fresh or buy glass bottles.

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