Caroline, the link between aluminium and risk of AD remains controversial - I don't think that there is yet any clear evidence either way.

As far as Prevagen is concerned, you may find the information in this link of interest; http://myadvocates.com/blog/dangerou...-investigation .

The central issue is that Prevagen is taken by mouth and its allegedly therapeutic ingredient (apoaequorin) is a protein.

All proteins are broken down into their amino acids during digestion. Quoting from the link:

"The product cannot work as advertised because its only purported active ingredient, apoaequorin (a protein), is completely destroyed by the digestive system and transformed into common amino acids no different than those derived from other common food products."

Because of this, taking any protein which may be of therapeutic benefit by mouth is pointless.