sensitivity

Hi, im having trouble understanding the differances between insulin resistance and sensitivity. DB nurses say I'm both. More often than not I am sat at a desk working, I'll get up and potter about and I'll do a walk. But my insulin drops to where I started by 4 hours so I'm told my ratio is...

I've been told my blood sugar control is 'too good', it averages between 5-8mmol/l, but I feel sick and get headaches/thirsty/tired/blurry vision when it gets to the 7-8 range, so try and keep it at 5-6, because I feel my best then. The diabetic nurse said my background BG was 'very tight' and...