>Extremely low blood sugar in divers with diabetes can cause loss of consciousness. If this occurs while the diver is in the water, it can be fatal. It would be wise to obtain blood sugar measurements before and after your jogging sessions and after swimming. If hypoglycemia does not occur, and your physician advises you that you have no coronary artery disease or other reason to avoid scuba, you could resume diving. A regular annual re-evaluation for diving fitness is appropriate. If you do take up diving again, this would be an opportunity for you to learn how your blood glucose levels change with scuba diving. In DAN's current study of insulin-dependent divers, we require divers to check their blood glucose levels at three separate intervals before getting into the water and immediately after a dive. This additional information will help you make diving and eating decisions.