INS and type 2 diabetes mellitus: On the other hand, it was negatively correlated with a low educational level and some barriers to insulin therapy, such as fear of death, dependence on others, the difficulty of carrying insulin while traveling, follow-up challenges, the difficulty of dosing accuracy, the difficulty of keeping insulin, inconveniences in daily life, considering insulin as the last resort, the deterioration of T2DM with insulin, and social stigma.