Managing a busy to-do list and crazy work hours isn't just stressful. It also increases diabetes risk. Chronic stress causes your body to release extra stress hormones, such as cortisol. In turn, that causes insulin resistance, which makes blood sugar levels climb. Stress also contributes to other diabetes risk factors, including depression, a bad diet, and poor sleep. Manage stress with relaxation techniques, such as yoga and meditation. Spend time with friends or enjoy a nightly sitcom for some laughter.