Even if no one in the family has diabetes, you can still get it. Genes alone don’t determine whether you’ll get diabetes or not, the environmental factors are involved too.
Despite the absence of disease in parents, the risk of diabetes increases if both carry diabetic genes. Along with genes, environmental factors play an important role in the development of diabetes. These environmental factors include unhealthy diet, or low levels of physical activity. These factors give raise to obesity, which is a major contributing factor.
For type 1 diabetes, the environmental risk factors are a little bit less certain. But latest researches revealed the fact that environment is vital too. Exposure to certain viruses or toxins in the environment contributes to the risk of the disease. So, if none of your family members have been exposed to the environmental risk factors, none of them will develop diabetes, but if you are exposed, you may develop diabetes.