People with type 2 diabetes don't produce enough insulin or their bodies can't use the insulin adequately. Insulin is a hormone that is made by cells in the pancreas. It controls the amount of sugar in the blood.
Insulin may also have an impact on tissue in the body. Its effects on tissue are influenced by many factors, including obesity and the accumulation of fat around the belly and on major organs in the abdomen. The fat cells can produce chemicals that lead to inflammation.
Scientists are only beginning to understand the role this form of internal inflammation may play in the development of chronic diseases like diabetes.
The Role of Inflammatory Chemicals
Decades ago, researchers identified higher levels of inflammation in the bodies of people with type 2 diabetes. The levels of certain inflammatory chemicals called cytokines are often higher in people with type 2 diabetes compared to people without diabetes.
Obesity and inactivity have long been known to be the most important risk factors that drive the development of type 2 diabetes.
How could carrying extra weight and sofa-sitting be connected to higher levels of inflammatory chemicals in the body and the development of diabetes?
Researchers discovered that in people with type 2 diabetes, cytokine levels are elevated inside fat tissue. Their conclusion: Fat causes continuous (chronic), low levels of abnormal inflammation that alters insulin's action and contributes to the disease.
As type 2 diabetes starts to develop, the body becomes less sensitive to insulin and the resulting insulin resistance also leads to inflammation. A vicious cycle can result, with more inflammation causing more insulin resistance and vice versa. Blood sugar levels creep higher and higher, eventually resulting in type 2 diabetes.
Emotional stress can also increase levels of the chemicals of inflammation. It's unknown whether stress by itself can contribute to the development of diabetes, though.
Does inflammation cause diabetes? It's not as simple as that. All researchers know for sure is that inflammation is somehow involved in the development of type 2 diabetes.
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