Blood glucose or A1c test — As you age, monitoring your blood sugar levels becomes more and more important. Get screened, in your 40s, especially if you have sustained blood pressure greater than 135/80, take medicine for high blood pressure, or are at risk for developing diabetes. While many people do not feel symptoms with type 2 diabetes, common symptoms such as excessive thirst, frequent urination, excessive hunger, fatigue, blurry vision and sores or cuts that won't heal are important to recognize. According to the CDC, diabetes is the 7th leading cause of death in Americans. Over 12% of adults 20 years and older have diabetes - over 8 million undiagnosed and are not currently being treated.