DAN has studied the issue of diabetics diving and has issued some recommendations for safe diving. There are some excellent articles by diving physicians online, too.
Resolve any issues before going to a resort or live-aboard. Regardless of what DAN and your doctor say, the resort or live-aboard still has the last say about whether you'll be allowed to dive. It would be best to have a regular dive buddy who is prepared to help you, rather than being assigned to unknown buddies. Be sure your buddy has the skills, fitness, and gear for self-rescue, in case you're not able to help him.
There are glucose gel tubes and cake frosting tubes that some diabetics take on dives in case they encounter a problem. Practice using something like this before you need to use it in an emergency.
Treating low blood sugar with carbs only may only provide temporary correction. Many diabetics find that they also need to have some protein with or soon after the carbs, or their blood sugar will go low again.
Resolve any issues before going to a resort or live-aboard. Regardless of what DAN and your doctor say, the resort or live-aboard still has the last say about whether you'll be allowed to dive. It would be best to have a regular dive buddy who is prepared to help you, rather than being assigned to unknown buddies. Be sure your buddy has the skills, fitness, and gear for self-rescue, in case you're not able to help him.
There are glucose gel tubes and cake frosting tubes that some diabetics take on dives in case they encounter a problem. Practice using something like this before you need to use it in an emergency.
Treating low blood sugar with carbs only may only provide temporary correction. Many diabetics find that they also need to have some protein with or soon after the carbs, or their blood sugar will go low again.