Prediabetes, sometimes referred to as impaired glucose tolerance, consists of having higher than normal blood sugar levels and has the potential to develop into type 2 Diabetes if left unchecked. While it is not as serious as type 2, it can still have negative effects on the heart and circulatory system. Detecting prediabetes is crucial to getting the situation under control and keeping it from becoming worse.Causes of PrediabetesThe exact causes of prediabetes are as of yet unknown. All that is certain is that glucose in the body is not being properly processed and builds up in the bloodstream. There are several factors which add to the risk of prediabetes, many of which can be avoided with simple lifestyle changes.Diabetes is known to develop more in those who are older and those of African America, Latino, Native American or Asian American decent. People who are overweight or have high blood pressure are also more likely to get it, as are those who have a family history of diabetes. Women who have previously had gestational diabetes and those with inactive lifestyles are two more higher-risk groups.Symptoms of PrediabetesThere are very few indicators of prediabetes and most people who have it exhibit no symptoms at all. One sign is acanthosis nigricans, a darkening of certain areas of the skin, usually the neck, elbows, knees, knuckles or armpits.Sometimes people will begin to show signs of type 2 diabetes. An increase in thirst, frequent urination, blurred vision, cuts or bruises that heal slowly, a tingling or numbness of the hands and/or feet and bouts of fatigue are all type 2 symptoms that may appear during prediabetes. Sometimes one may begin to experience frequent infections as well, particularly of the skin, gums or bladder. Ultimately, the only way to truly find out if one has prediabetes is to have a doctor test for it using a blood glucose measurement.Treating PrediabetesThere is no way to rid one's self of prediabetes, but there are several things which can be done to prevent it from becoming type 2. Changing diet, maintaining a healthy weight and staying physically active will all help to reduce chances of progression. By following these patterns, it is possible to reduce the risk by more than half.If diagnosed with prediabetes, it is important to see a doctor every year or so to make sure that it has not developed into type 2 diabetes. If ignored, it is likely to progress within 10 years, bringing a whole new set of problems which could very likely have been prevented.