Rhoda, Thanks for your comment and question. The issue you raise is a difficult one to address, since physicians age along with their patients, we must always be careful to evaluate the doc's advice. This gets much harder as one ages. Possibly bringing a trusted family member along on a visit would be a good thing to do, so that the patient's desires for guidance, information, and understanding can be emphasized by the friend or relative. Of course, issues of privacy can make that tricky.
Wish I had a simple answer for you, but as you can see, the problem is multifactorial and complex. Another option would be to request a consult with a specialist such as a geriatrician (for those folks in their mid-60's or over), who can make recommendations back to the primary care provider. Sometimes new eyes on a problem can really help the primary doc to recognize things have changed.