In the past 20 years the prevalence of diabetes among US adults grew by 45%. The greatest increase is among seniors aged 65 and over.
Certainly, one risk factor for diabetes is obesity. The obesity (BMI more than 30) rate has increased from 22% to 34.6% and the prevalence of those with BMI 40 or greater rose from 2.7% to 6.4%.
What can you do? Make sure you know what your BMI is. This is easy to calculate with a BMI calculator http://www.nhlbi.nih.gov/guidelines/obesity/BMI/bmicalc.htm . You can also check a fasting blood sugar or a hemoglobin A1c test (available with your physician) to assess how well your body is controlling your blood sugars.
Be mindful of your weight and your fasting blood sugar.