Smoking is extremely bad for people with diabetes. It causes further damage to their blood vessels, contributing to poor circulation and organ damage, and contributes to heart disease.
People get Type 1 diabetes when the insulin cells in their body start to kill each other. Insulin cells are needed to control how much sugar goes into your bloodstream. If there are no more insulin...
They smoke for many reasons like addiction or for stress relief, or they just want to look cool but the truth is smoking can kill you. And then they get addicted.