It is just a media report designed to scare people and make some kind of money.
I agree though that it is a matter of controlling our blood sugars as to hinder any sort of deterioration but there is not enough conclusive evidence here to convince me that this is something else to worry about. The report is biaised. Also somewhere there in that report it states "and it will likely get worse without careful disease management." so it is saying if you don't control this now then you better be scared and be prepared to pay good money to pay for it. It also says "The study, published in the journal Neuropsychology, found that the mental deterioration was no better in younger adults with diabetes than in an older group, suggesting that the damage is done early in the disease and remains stable thereafter" so if the damage is supposedly already done then we are first diagnosed but not later ... and we are under control now and our mental function is relatively good - then why worry :?:
Another point is that there are ways to improve the speed and function of your brain - most of us have heard of brain training... same as your body, your brain can be trained to work better also so if you are worried about your memory or lack of concentration or whatever then take up some exercises for your brain or start reading... you'll notice the difference. It doesn't matter whether your diabetic or not - it works the same for all of us.
Rach