A groundbreaking British study identifies sharp, post-meal blood sugar spikes (postprandial hyperglycemia) as a potent and specific new risk factor for Alzheimer’s disease, shifting focus from just chronic high blood sugar. Using genetic data from over 350,000 people, researchers found a 69% higher risk of Alzheimer’s in those genetically predisposed to high blood sugar after eating, establishing a likely causal link. The increased risk is not explained by general brain shrinkage, suggesting glucose spikes cause more subtle, direct damage to brain cell function through pathways like inflammation and protein damage (glycation). The findings argue for updated public health guidance that…

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