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People who have a higher biological age than their actual chronological age have a significantly increased risk of stroke and dementia, especially vascular dementia. These are the results of a study from Karolinska Institutet in Sweden published in the Journal of Neurology, Neurosurgery and Psychiatry.

En 2022, UC's Robert Krikorian, PhD, and his team published research that found adding blueberries to the daily diets of certain middle-aged populations may lower the chances of developing late-life dementia.

Research suggests ("Diet-induced glial insulin resistance impairs the clearance of neuronal debris in Drosophila brain") a high-sugar diet, commonly associated with obesity, leads to insulin resistance in the brain and may heighten the risk of neurodegenerative diseases like Alzheimer's.

Using a large population-based sample of nearly 500,000 individuals from the UK Biobank, findings showed that loneliness was associated with risk of incident Parkinson disease (PD) across demographic groups and was independent of depression and other prominent risk factors and genetic risk.