Researchers in Australia have found that even those now considered normal are at greater risk of the brain shrinkage that comes with type-2 diabetes and is evident in dementia patients.
“We found that even within the normal range, and in people without diabetes, higher sugar levels were associated with greater shrinking of the hippocampus,” said Nicolas Cherbuin, head of the brain lab at the Australian National University in Canberra.
“If these findings are replicated in other cohorts, norms for blood sugar levels and diabetes may need to be re-examined.” Over four years Cherbuin studied 249 people aged 60-64 whose blood sugar was in the normal range of 4-6.1 millimoles per litre.
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