Uncontrolled diabetes increases the risk of cognitive problems such as Dementia and Alzheimer's. Higher than usual normal blood glucose levels may also damage nerve cells. According to researchers, Type 2 diabetes also plays a major factor in developing slow, progressive Dementia. The risk of memory loss increases when diabetes is not properly managed. Better management of diabetes and blood sugar is important and may help prevent serious memory loss. But the good news is that there are things you can do to take control of diabetes and prevent its problems.