You went to your annual physical. You asked good questions. Your labs came back and your doctor said everything looked normal. But something still does not feel right. Weight that will not budge. Energy that is not there. A feeling that your body is working against you even though you are doing the right things. This is one of the most common patterns I see in new patients. And one of the most common explanations is a test that almost no one orders. It is called fasting insul