Evaluating Genomic and Clinical Risk Factors for Alzheimer's Disease in Individuals with Hypertension.

Background/Objectives: Alzheimer's disease (AD) is a progressive neurodegenerative condition whose growing prevalence has become an increasingly important public health concern as the population ages. The lack of a definitive cure elevates the importance of identifying risk factors that are crucial for prevention efforts. Hypertension (HTN) and obesity have emerged as two highly widespread, interrelated conditions that have independently been associated with AD risk. Despite extensive research into AD pathology, the impact of obesity in a hypertensive population is not well explored. This study aims to investigate how obesity and blood pressure control within a hypertensive population may interact with genomic risk and environmental factors to influence AD incidence. Methods: A retrospective cohort of matched AD and normal patients diagnosed with HTN and taking anti-HTN drugs (n = 1862) from the All of Us database was analyzed. In this hypertensive cohort, obesity was significantly associated with increased AD risk. Genome-wide association studies (GWASs) were conducted on hypertensive AD individuals (n = 1030) and identified six single nucleotide variants (SNVs) that were associated with AD development in this population. Results: Obesity and Area Deprivation Index, a measure of socioeconomic status, were significantly associated with elevated AD risk within the hypertensive cohort. GWAS analysis identified six SNVs significantly associated with AD development among the hypertensive cohort. Conclusions: Our findings suggest that among hypertensive individuals, comorbid obesity and the Area Deprivation Index confer greater AD risk. These results highlight the critical need for obesity prevention and management strategies as part of Alzheimer's risk reduction efforts.