I don't think it's sugar at all, I believe it's the drugs that you take for diabetes.
My husband had a photographic memory. He could remember anything, time, places, people,many things you showed him, he remembered it.
When, he became diabetic, he didn't eat sweets, very rare, his love was salt and protein ( steaks, chicken, lamb, and Pork) lots of it. He also loved processed food- canned food- spam, luncheon meat,tinned fish, corn beef. All this canned food had fat in it as well. So, his cholesterol went thru the roof, as his blood pressure ( he was on 3 kinds of medication, no joke). He Loved Salt! He would pour it on his food like sugar. I threw out so many salt containers, no salt shakers in our house.
so, the doctors put him on cholesterol medicine, blood pressure medicine, diabetes medicine, and then I noticed he couldn't remember little things and asked the doctor about it. They had no clue. He couldn't remember people who he just met 2 weeks ago. I knew it had to be one of his medications so I deleted them one by one and found out it was his diabetic medicine. I tried to change it but no, that's the only one he could take because his diabetes was so high. I changed doctors several times, did tests, but the doctors didn't believe me. But, I had the proof! So, how can you get rid of diabetes for good? Without medicines- You have to retrain your brain- It possible to be off it forever, to not be Diabetic- get this book-The PH Miracle by Robert O. Young and Shelley Young- take Control of Your Own Body and Learn and Become Healthier!