1 Sugar is absorbed into the bloodstream, where it enters cells with the help of insulin. 2  Your liver stores and makes glucose.  When your glucose levels are low, such as when you haven't eaten in a while, the liver breaks down stored glycogen into glucose to keep your glucose level within a normal range.
Training to become a pediatrician requires a four-year undergraduate degree, four years of medical school, and three or more years of hands-on residency training.
The exact amount of time that it takes to become a pediatrician depends on many different factors, but for most students, eight years of schooling after high school followed by a residency that lasts at least three years is the norm.