Dear Mam, As you have told , your husband's sugar levels seem to be quite high. Persistent high blood sugars is injurious to health ,especially the eyes and the kidneys.More over high sugars may land him up in complications like Diabetic Ketoacidosis
,where in there is an increased acid production in the body. This if not treated promptly may prove fatal.
I feel that you should tell him to look up regarding diabetes
and its complications ,rather than getting people to advice him regarding diabetes.Some individuals may not like taking advice from others, some may not like to acknowledge the fact that they have some illness. Try not to discuss his diabetes problem in front of him with others. I think a little bit of tactful handling, a bit of privacy will do a world of good. I am sure he will accept his condition and will take medical advice