A. Yes, although the actual impact varies, it depends on your level of diabetic control.
What matters the most is not whether you are type 1 or type 2, or whether you use oral med or use insulin, or whether you were diagnosed at age 10 or diagnosed at age 50, what matteris is your A1C number.
If your A1C number is over 10, your life insurance application will be subject to great scrutiny and your premium, if approved, will be very high. If under 8, you could still get affordable rates, although most likely will be higher than someone who has no health issue at all.