Modifiable pathways in Alzheimer's disease: Mendelian randomisation analysis.

Area of Science:

• Neuroscience and Genetics
• Public Health and Epidemiology

Background:

• Alzheimer's disease (AD) poses a significant global health challenge.
• Identifying modifiable risk factors is crucial for AD prevention strategies.

Purpose of the Study:

• To investigate associations between potentially modifiable risk factors and Alzheimer's disease.
• To determine the impact of socioeconomic, lifestyle, cardiometabolic, and inflammatory factors on AD risk.

Main Methods:

• Employed a Mendelian randomization study design.
• Utilized genetic variants as instrumental variables for modifiable risk factors.
• Analyzed data from the International Genomics of Alzheimer's Project (17,008 AD cases, 37,154 controls).

Main Results:

• Genetically predicted educational attainment showed a significant association with reduced Alzheimer's disease risk.
• Suggestive evidence indicated potential protective associations for smoking and 25-hydroxyvitamin D levels.
• Higher coffee consumption was suggestively associated with an increased risk of Alzheimer's disease.

Conclusions:

• Higher educational attainment is associated with a reduced risk of Alzheimer's disease.
• Further research into lifestyle factors like smoking, vitamin D, and coffee consumption may offer new avenues for AD prevention.