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‘Cause” is a strong word. It means that A results in B happening. Causality is also surprisingly difficult to prove. Most medical studies only show association between A and B, while causality often remains speculative and frustratingly elusive. Obesity and diabetes are no exception.
There are many types of diabetes. All are unified by elevated levels of blood sugar. Type 1 diabetes accounts for less than 10% of cases and results from autoimmune destruction of the beta cells in the pancreas, which produce and release insulin. (In an autoimmune process, antibodies that normally target and fight infection instead target one’s own cells). Type 3c (secondary) diabetes can occur when there has been destruction of the pancreatic beta cells through some other process, such as excessive alcohol, inflammation or surgical resection.
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