I think a lot of us had no noticeable symptoms. I was very healthy, ate vegetarian and exercised a ton at the gym. I went to get my eyes checked because I thought I needed stronger reading glasses. Well, that was the beginning of my diagnosis. When they dilated my eyes they saw diabetic damage beginning. The Optahmologist was shocked because I was quite thin at the time. But without any symptoms my HbA1c was almost 11. That is why they say there are probably 80 million pre diabetics walking around not knowing that they have D. It is really a silent killer.