I agree with rumpled, it could be multiple endocrine issues, I'm just repeating to reinforce- look to the pituitary and Find a new endo!! Age does not matter! Good luck, if you stand your ground, someone will listen.
your symptoms sound like they are glycemic (diabetic) in nature, sounds like someone is missing something. find a different doctor.
Change your doctor. Some of these HMO guys really don't care. Maybe all the bookkeeping makes them lose their taste for medicine.
Look up Cushing's syndrome. Find the right endo. The urination could be diabetes insipides and that is also a pituitary issue.
There could be multiple issues - get to an endo that looks at the pituitary.
It does not matter about your age - it can happen at any time. That is a silly comment.