By the way, doctor: Should I worry about my diabetes leading to Alzheimer's?

Q. I'm an 86-year-old man with type 2 diabetes. I get my eyes checked, eat carefully, and test my blood sugar. I exercise in the gym three times a week and still play tennis once a week. Recently, I read new studies that say type 2 diabetes may be a precursor to Alzheimer's disease. It scared the heck out of me. What do you think?

A. I think you should relax — mentally — but not physically!