But many scientists says there is not enough evidence to blame the metal, used by thousands for everyday purposes to cook and store food.

However, Professor Chris Exley, from Keele University, says his latest research confirms it does indeed play a role in cognitive decline.

Here, in a piece for a medical blogging website The Hippocratic Post, he reveals the findings from his latest study.

There has been a strong link between human exposure to aluminum and the incidence of Alzheimer's disease for half a century or more.

However, without definite proof, there is still no consensus in the scientific community about the role of this known neurotoxin in this devastating brain disease.

The latest research from my group, published in the Journal of Trace Elements in Medicine and Biology, makes this link even more compelling.