Diabetes is a disease that can develop over time, or it can be inherited genetically. A DNA diet test can help to determine your genetic predisposition to diabetes so that you can prepare for it. There are also different medical conditions that can lead to a higher likelihood of developing diabetes; these can be tested for with genetic testing too.
If you are genetically predisposed to diabetes, there are steps that you can take to avoid the progression of the disease into diabetes type 2.