Diabetes in the family...!??

Makes sure he keeps the appointment and gets checked out. If he has diabetes it will be a shock at first...reassure him that he will be able manage this new challenge in life. It's great that he already knows how to cook and has a healthy diet, mostly he will have to avoid certain foods. A crisis like this can be a blessing in a way because it forces you to take care of yourself and appreciate life and also share your experience with other people who are going through it. Good luck you sound like a great cousin.