There have been a good number of medical studies, and articles showing the negative effects of aluminum in our food stream. (Here are just a couple:
http://universityhealthnews.com/daily/memory/aluminum-linked-to-alzheimers-disease/ and
http://www.globalhealingcenter.com/natural-health/concerned-about-aluminum-dangers/ ) And - full disclosure - I have had some "personal experience" with metals, and some of the health effects.
So, clearly I may be over-sensitive to this issue. But, I think that if you are using aluminum in your cooking - it would be in your best interest to make certain it is anodized, and inspect it regularly for scratches that would negate the anodizing. But, let me share with you some what I can grasp about the significance of ingesting aluminum or other metals in non-nutritional amounts.
When you think about the pragmatics of this potential issue - think of it this way: Our bodies are electrically activated organic machines. Electrically powered equipment is sensitive to changes in the conductivity - or resistance of the electrical currents needed to power them. More specifically - the brain is acutely sensitive to these potential changes in conductivity/resistance to micro-currents that are used in our synaptic response. When you have a conscious - or unconscious thought...your brain sends a "spark" or micro-current to specific neuronal connections, creating a "synaptic response". If you alter the natural level of conductance- then you can have neurological issues. Mine were described as a "slow acting stroke". The concern was that I had a clot that was able to move slowly thru the brain..but that found to not be the case. It was metal "poisoning". Too much ingestion of any metals can create this and other problems. SO, how much is "too-much"? I have no idea. But after coming to the understanding of HOW the body's electrical system and the brain interface - without becoming paranoid on the subject, I chose to just pay attention to the issue better. But, I do not agree with the "percentage" of adsorption as a baseline for determine safe levels, or insignificant levels. Every person's chemistry differs a little.
But I never wrap any food in aluminum foil anymore then cook it.
But - I am not going to preach about this, it is my personal decision, and not a criticism of anyone else's if you feel differently. It is a personal experience that I will not repeat, but I will suggest that you look at a number of resources before you make your own decisions.
One note: I no longer rely on Snopes, Mike...I found that they receive money from George Soros, and that made me feel that the information could be influenced to support a "position" of some kind. And flatly - ANY resource needs to be inspected to find out WHO pays for the information to be published. "Agendas" are just part of the human condition. I just don't think any ONE resource is enough to support making decisions that can impact our health.