What about this town in South America that has the highest concentration of Alzheimers in the world? The genetic mutation E280A seems to guarantee you get earl

What about this town in South America that has the highest concentration of Alzheimers in the world? The genetic mutation E280A seems to guarantee you get early onset Alzheimers ( at least I think it's 100% , couldn't find any info on what percentage with the mutation get it ) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019728/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4019728/ https://www.newscientist.com/article/dn28514-conquistador-brought-early-onset-alzheimers-to-colombian-town/ https://www.newscientist.com/article/dn28514-conquistador-br...