Dr. Rangan Chatterjee once had a patient with Type 2 diabetes struggling to lower his blood sugar levels, despite following an intense diet and exercise program. Chatterjee counseled him to focus on the root cause of his problem: chronic stress. The patient had been putting in long hours at the office, working late into the night and skimping on sleep. Chatterjee said that constant stress can wreak havoc on blood sugar levels, and urged the patient to practice yoga and meditation and to shut off his computer 90 minutes before bed each night. Six months later, the patient’s blood sugar levels had drastically improved and were close to normal.