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Sudden Blood Sugar Spikes Linked to Higher Alzheimer's Risk

Published January 15, 2026, 14:03
Sudden Blood Sugar Spikes Linked to Higher Alzheimer's Risk

New research suggests that sudden spikes in blood sugar after meals may increase the risk of developing Alzheimer's disease. The study, conducted by researchers at the University of Liverpool and published in the journal «Diabetes, Obesity and Metabolism», was based on the analysis of genetic data from more than 350,000 participants. The researchers focused on indicators such as fasting glucose, insulin levels, and blood sugar two hours after a meal. Using a technique called «Mendelian randomization», they examined the relationship between these indicators and the risk of dementia. The results showed that individuals with higher blood sugar after meals (postprandial hyperglycemia) had a 69% increased risk of developing Alzheimer's disease. This association does not appear to be due to changes in overall brain size or damage to white matter, suggesting that the risk may stem from more subtle mechanisms. The researchers emphasize the need for further research in larger populations and age groups. However, the findings highlight the importance of managing blood sugar, especially after meals, as a potential prevention strategy for Alzheimer's disease.