GDM is similar to type 2 diabetes, as it is associated with insulin resistance and insen-sitivity. The exact mechanism responsible for the development of GDM is not fully understood; however, pancreatic beta-cell dysfunction may be responsible. As hormonal levels continue to rise in the second and third trimesters, beta-cells are unable to produce or secrete sufficient insulin for glucose regulation. Fasting blood glucose levels are elevated as insulin deficiency and resistance increase. Delayed insulin response, insulin resistance, and placental hormonal antagonism are responsible for postprandial glucose excursions. Human placental lactogen and cortisol block insulin receptors, which creates a deficiency in circulating insulin production, and results in increased glucose intolerance. In normal pregnancy, the beta-cells compensate by increasing insulin secretion; in GDM the decreased insulin response will result in elevated glycemic levels .
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All you need is a proper diet of fresh fruits and vegetables and get plenty of exercise and you'll be fine. Ever heard those words from your doctor? If that's all heshe recommends then you're missing out an important ingredient for health that he's not telling you. Fact is that you can adhere to the strictest diet, watch everything you eat and get the exercise of amarathon runner and still come down with diabetic complications. Diet, exercise and standard drug treatments simply aren't enough to help keep your diabetes under control.