screen

BUY SOME! They're like five for $2 at my local headshop. They give them away for FREE sometimes. Screens are not hard to find.

 

I have. Did you know aluminum is included in various foods and drinking water? We're at risk in that fashion, too. However, it has not yet been proven.

"After weighing all the evidence, experts have concluded that even though a true association between dementia (including Alzheimer's disease) and high concentrations of aluminum in drinking water has not yet been proven, the possibility cannot be ruled out, especially for the most elderly."

http://www.hc-sc.gc.ca/ewh-semt/water-eau/drink-potab/aluminum-aluminium_e.html

Smoking Using Aluminum Foil
Most brands of aluminum foil (Renoyld’s Wrap with the anti-stick coating and similar brands being the exception), are untreated and remain 99.9% aluminum (again with the .1% being residues and other agents in the manufacturing process)

In order to inhale aluminum it would have to be changed from a solid to a vapor. This requires a lot of heat. More heat than what it produced by a butane lighter. A butane lighter is not even capable of melting aluminum, if a lighter fails to melt the aluminum, it will not be able to change the aluminum into a vapor.
http://forum.grasscity.com/recreational-marijuana-use/107271-aluminum-foil-alzheimers-disease.html

There have been numerous conferences on aluminium and health ever since the idea that the metal might be a risk factor for Alzheimer's disease was first proposed.

The medical research community, international and government regulatory agencies and the aluminium industry all review the evidence at frequent intervals.

The overwhelming medical and scientific opinion is that the findings outlined above do not convincingly demonstrate a causal relationship between aluminium and Alzheimer's disease, and that no useful medical or public health recommendations can be made, at least at present.

It has proved extremely difficult to devise studies which could resolve this problem one way or another.

Alzheimer's is a common disease with multiple causes, while aluminium is widepread in the environment and there are no methods that allow us to measure an individual's 'body burden' or lifetime exposure to this element.

It is possible that suitable 'transgenic' animal models which develop the pathological features of Alzheimer's disease in their brains will enable scientists to determine if such changes are accelerated or exacerbated by aluminium at levels which correspond to normal human exposure.
http://www.alzheimers.org.uk/Facts_about_dementia/Risk_factors/info_aluminium.htm