The main thing I know about aluminum is that when it is combined with mercury, the combination is much more toxic.

Dr. Haley, Chemistry Chair at the U. of Kentucky says the combination is many-times more toxic than either alone.

I have not confirmed this but a source that I know and trust told me that public fixtures, such as hand rails, have been made illegal in the EU in the past year because of what we now know about aluminum. The US is behind many other countries in health-related law.