Insulin, a peptide hormone produced in P-cells of the islets of Langerhans in the pancreas, strongly modulates the metabolism, facilitating the uptake of glucose in the liver, muscle, and fat tissue. Insulin facilitates the storage of glucose as glycogen in the liver and muscle and inhibits the use of fat as an energy source. The HPA axis and the sympatho-adrenal-medullary system interact with insulin actions, and chronic stress exposure is associated with insulin resistance, diabetes mellitus 2, and the metabolic syndrome (Kyrou et al, 2006; for detail see also Chapter 46).
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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.