How can I get my husband to take care of his diabetes?

My husband has diabetes. We do not have health insurance. He is eligible to get some help from the VA as he was in the Navy, but so far he just hasn't gone. It is now affecting our sex life and has for over 2 years. The last time that I know he checked his blood sugar it was well over 400. If I can't get him to eat better ( such as cutting down on his carb portions that turn into sugar), is it too wrong of me to take out a life insurance policy on him. He is 43. We've been married for just 5 years. I need considerate and helpful advice.