N. Scarmeas

Global Incidence of All-Cause Dementia: A Meta-Analysis.

Importance Global dementia incidence estimates are limited by underrepresentation of low- and middle-income countries and heterogeneous analytic methods. Due to these limitations, true understanding of the global dementia landscape remains incomplete. Objective To identify dementia incidence rates by age and sex in v...

Glial-specific polygenic risk and mediterranean diet impact cognitive performance and dementia-related outcomes in the elderly.

Polygenic Risk Scores in Alzheimer’s Disease: A Cross-Scale View from Genes to Brain and Behavior

Alzheimer’s disease (AD) is a genetically complex disorder in which inherited susceptibility is distributed across rare high-impact variants, the apolipoprotein E (APOE) locus, and a broad polygenic background of common risk alleles. Polygenic risk scores (PRSs) provide a quantitative framework for summarizing this dis...

Diet-responsive proteogenomic effects following short-term restriction of animal products in humans

The effect of diet on genetic regulation in humans remains largely unexplored. Here, we investigate gene-diet interactions in a unique group of healthy individuals (N = 200) who alternate between omnivory and dietary restriction of animal products for religious reasons. Using longitudinal proteomic and genotype data, w...

Serum metabolite signature of the mediterranean diet adherence and cognitive function: Evidence from two cohorts.

BACKGROUND AND AIMS The Mediterranean diet (MD) has been consistently associated with favorable cognitive outcomes. However, reliance on self-reported dietary assessment limits accurate characterization of diet-health associations. Circulating metabolites may capture the endogenous metabolic imprint of habitual dietary...

APOE-stratified genome-wide association analyses provide insights into the genetic etiology of Alzheimers’s disease

Understanding of the genetic architecture of AD in the context of its main genetic driver is improved, and APOE-stratified insights may help understand and overcome side effects, inform clinical trial enrollment strategies, and create the scientific basis for targeted, mechanism-driven therapies in neurodegenerative di...

Exome analysis of 22,319 individuals links extremely rare copy-number variants and 22q11.21 dosage to Alzheimer risk.

It is concluded that rare coding CNVs in a proportion of AD-associated genes and 22q11.21 duplication as a strong AD-risk-decreasing factor increase AD risk and Conversely, 22q11.21 duplication as a strong AD-risk-decreasing factor is identified.