It is true that carbohydrate is found in almost everything that we eat.
It is an essential nutrient that is an excellent source of energy which is measured in calories for the body. It is also the preferred fuel for the brain and nervous system. It comes in two forms: starch and sugar. Counting your carbs helps you keep your blood sugar at its target level because it is also the nutrient that most affects your blood sugar. It is a starch (complex carbohydrate) that is found in foods such as breads, cereals, grains, pasta, rice, flour, legumes, and vegetables. The sugar form (simple carbohydrate) is found in foods such as fruits, juices, milk, honey, desserts, and candy.
Studies have shown that exercise and a healthy diet can prevent the development of type 2 diabetes in people with pre-diabetes -- a condition that often develops prior to full-blown type 2 diabetes.
Because of the link between obesity and type 2 diabetes, you can do a lot to reduce your chance of developing the disease by slimming down if you are overweight. This is especially true if diabetes runs in your family.
Medication has also been shown to be effective in preventing diabetes in those that are at risk. Preferably, if one can stay active, exercise regularly, (hopefully drop a few pounds in the process) and watch the carb intake (which as mentioned before, carbs help to keep the blood sugar at its target level), things should go well.