People with a family history of diabetes, obesity, and women during pregnancy may be prone to elevated blood sugar. Diabetes is generally the result of a combination of genetic and environmental factors. Genetic predisposition plays a role in the development of diabetes, so people with a family history of diabetes may be more likely to develop diabetes than those without. People with a family history of diabetes are more likely to develop type 2 diabetes than those without a family history of diabetes. People who like to eat high-calorie, high-fat foods and who are obese may be more likely to develop type 2 diabetes than healthy people. During pregnancy, a series of physiological changes in the pregnant woman’s body will lead to an increase in the demand for glucose, an increase in insulin resistance, and a relative lack of insulin secretion, which may lead to an increase in blood glucose during pregnancy. People with these factors should maintain a good lifestyle, monitor their blood glucose if necessary, and seek medical attention if they have abnormal blood glucose values.