Fried and baked goods are made with refined flour, and it contains simple sugar instead of complex carbohydrates. They are absorbed into your bloodstream and cause a spike in insulin called a peak. When sustained over a long period and repeated over and over again, these insulin peaks contribute to wear down our natural reserve of insulin. The beta cells of the pancreas are responsible for synthesizing insulin, but excess production of insulin leads to insulin resistance and impaired beta-cell function, causing type 2 diabetes.