I can confirm that dutasteride does indeed raise your blood sugar levels.
I have been taking dutasteride for about 20 years, works great at stopping hairloss and I've had no other side effects....other than high fasting blood sugar levels.
I started losing my hair in my early twenties and after some research decided dutasteride was the way to go and it worked a treat and stopped any further hair loss, I wouldn't say more hair grew back, but i was able to stop the hair loss in its tracks.
I was lucky that I did not get any side...