Like I said, you can have your dogma. Irrationality is to believe something based on faith alone and to ignore contradictory evidence.
>At any rate, did you know they make soda cans out of aluminum, too? And formaldehyde is used in such a wide variety of products that focusing on vaccines in particular make me pretty sure you have an ulterior motive.
According to the United States Department of Health and Human Services National Toxicology Program, formaldehyde which "is used in such a wide variety of products," is known to be a human carcinogen. That means it causes cancer.
According to the Agency for Toxic Substances and Disease Registry "Oral exposure to aluminum is usually not harmful. Some studies show that people exposed to high levels of aluminum may develop Alzheimer’s disease, but other studies have not found this to be true. We do not know for certain that aluminum causes Alzheimer’s disease." While they don't present a clear opinion one way or the other on aluminum's relationship to neurological disorders, I'll use common sense and not consume foods on a regular basis in which heavy metals may reside.
Sources:
http://ntp.niehs.nih.gov/?objectid=035E57E7-BDD9-2D9B-AFB9D1...
http://www.atsdr.cdc.gov/phs/phs.asp?id=1076&tid=34