Research has found that people with blood sugar levels at the high end of the normal range are at the same risk of brain shrinkage as diabetics.
A study compared diabetics and non-diabetics in the 60-64 age range. The non-diabetic group had sugar levels in the high end of the normal range. The study concluded that both groups were more likely to experience a loss of brain volume in comparison with those who had normal sugar levels.
The findings conclude that even without diabetes, a high sugar count within the normal range could have the same detrimental effects, and may therefore lead to a re-definition of diabetes.Read more at Australian National University