We all have a bad habit or two. While some bad habits have no direct effect on our health, others, such as eating fatty or sugary foods, can do harm.

According to the American Diabetes Association (ADA), diabetes is usually preceded by pre-diabetes, when blood glucose levels are somewhat elevated above normal. Because pre-diabetes usually has no symptoms, ask your doctor to test you for the condition if you smoke, are inactive or overweight, or have high blood pressure or high cholesterol.

Next, adjust your lifestyle to reduce your risk of developing type 2 diabetes. For example, the American Dietetic Association recommends filling one-fourth of your plate with grains or starchy foods, such as rice, pasta, or potatoes. Fill another fourth of your plate with protein, such as lean red meat, fish, or poultry. For the remaining half, include non-starchy vegetables, such as broccoli, carrots, or lettuce. Top off the meal with a glass of skim milk and a piece of fruit.

Also incorporate at least 30 minutes of moderate physical activity into your daily routine, and consider losing 5 percent to 10 percent of your total body weight if you’re overweight.

To help determine your risk for developing diabetes, take the ADA’s free risk assessment at their website.