Infections and type 2 diabetes
Every health theory needs a colorful pyramid, so here is one to show the progression from chronic infections to type 2 diabetes.
Each stage lasts until the stage before it is cured, or the patient dies. Consequently, the later stages overlap the earlier stages--that's why people with type 2 diabetes have so many inflammatory disorders.
More information on type 2 diabetes
Chapters 7, 8, and 13 of The Potbelly Syndrome give more information on how infections lead to insulin resistance and diabetes.
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