I have been type 1 for every day of my life that I can remember. Almost 21 years now (diagnosed at 10 months old)… For myself I truly didn’t understand the disease until my latter years of high school. It was at this point that I realized the true mathematical nature of blood sugar control via insulin. It’s different for all people, so I can predict what the kid will need to dose; it takes time to learn, lots of time and practice. Luckily there are some pretty good insulins available now as compared to what I was taking in say middle school (there’s nothing more embarassing than going low and making a fool out of yourself unknowingly in middle school, which I did at least a few times) eight-ten years ago. So he is going to have to be ready mentally to deal with that, and unfortunately bad experiences (which probably will happen) are really the only deterrent towards forcing him to perfect his routine (which like I said comes with experience having the disease itself over time).
I was unfortunately not much of an athlete in my younger years either. And I played lots of nintendo as well. Around my soph. year of HS I took a weight lifting class and never looked back. I have always had trouble with long bouts of cardio exercise due to my asthma, but also foot/shin pains. I attribute my foot pains (which also occur when walking distances with poor shoes on hard surfaces) to poor control as a youngster (nerve damage)! You may shown him this statement to motivate him, it’s not unbearable ever, but at times it gets annoying. I can usually get in a good 1-1.5 miles (@6-8 mph) on the treadmill before something starts hurting or my heart rate gets up to 190 bpm (a bit high!), but that’s not too bad I think. Today I lift/workout 5-6 days a week and I am in the best shape of my life, pretty damn jacked, with good a1cs (usually ~6.5), but do not wear the pump. You may look in to this for him if he has trouble with the needles… I however prefer the freedom of not being attached to a device 24/7. The one thing no diabetic wants is a constant reminder of their condition!
I think the best you can do is try to get him to do some sports now. Bike riding maybe. Buy him some nice equipment so he can enjoy what he likes. If he doesn’t like any sorts of physical activity, then I don’t know what to say. Try to get him into weight lifting once he starts maturing, which is essentially what I did, although I was a fairly active child (bikes, basketball, tennis, etc.). Still though at about age 14-15 I started to gain weight and I said no more of this and began to get hooked on pumping iron.
As a diabetic, it’s really not that debilitating of a condition, you just have to learn to know your body really well. I would also suggest getting him to take fish oils! I only started about a year ago but I think they are helping me with my health all around. I take 8-12 capsules a day, although you would want to start him with less because it can be hard on the stomach at first. And finally, get him to test his sugar level as much as possible. This is one thing I didn’t get big into until college. Nowadays I carry my meter with me almost everywhere, but back in middle or high school it was a pain because they would make me go to the fuckin nurses offices just to test. I mean seriously that’s just outright whack and it deterred me because I would have to miss 15 minutes of class or whatever to deal with the damn nurse. But it’s how things are at that stage, and it’s tuff to deal with, and it will be tuff for him. The most you can do is make him feel comfortable about it. I have no problem injecting in front of anyone in any place at any time. I mean I’m not obnoxious about it or anything, but if I have to take a shot in public I will. Try to work to get him to feel the same way because the more comfortable he is, the better off he will be.
Sorry for rambling, I have nothing to do at work, hopefully that helped a bit.