My father was a type I diabetic and stress and emotionality definitely dropped his blood sugar. We learned to recognize when he was low (he couldn't) because of the way he talked and because he was sweating and shaking. Sometimes it was like a switch going off.

Can you adjust your insulin on therapy days? By that I mean your post-mealtime insulin, if your doctor okays it of course? There are many different perspectives on managing diabetes, and in my family we considered the lows far more of a problem to the brain and body than highs. My father was diagnosed in his 40's and lived to his 90's with no complications from diabetes at all, unless it was responsible in some way for a stroke.