Diabetes mellitus type 2 state may occur; however, ketoacidosis is uncommon. Type 2 diabetes primarily occurs as a result of obesity and lack of exercise. Some people are more genetically at risk than others. Type 2 diabetes makes up about 90% of cases of diabetes, with the other 10% due primarily to diabetes mellitus type 1 and gestational diabetes. In diabetes mellitus type 1 there is a lower total level of insulin to control blood glucose, due to an autoimmune induced loss of insulin-producing beta cells in the pancreas. Diagnosis of diabetes is by blood tests such as fasting plasma glucose, oral glucose tolerance
Lifestyle causes of diabetes mellitus type 2 curtailment". Research also suggests intrauterine growth restriction (IUGR) or prenatal undernutrition (macro- and micronutrient) as another probable factor. Studies of those who were small or disproportionately thin or short at birth, or suffered prenatal exposure during period of famine such as the Dutch Hunger Winter (1944–1945) during World War II, have shown that they are prone to higher rates of diabetes. Environmental toxins may contribute to recent increases in the rate of type 2 diabetes. A weak positive correlation has been found between the concentration in the urine of bisphenol A, a constituent of some plastics, and the incidence of