While costs and stigma are hurdles, these devices reduce the number of pricks, can adjust insulin for different time periods of day and night, exercise, sickness, menstruation, exams and different day to day situations. Use of insulin pumps reduces episodes of low blood glucose (hypoglycemia) and improves overall control (HbA1c), says Dr Ambrish Mithal, Chairman of Endocrinology and Diabetes, Max Healthcare