I have been diagnosed with a fib, several years ago and am taking meds (beta blocker and antiarrhythmic, coumadin) I had a PVI 18 months ago and initially the frqency and duration of episodes diminished but never disappeared. recently, I was diagnosed with diabetes insipidus and have a fib episodes of increasing frequency (almost daily0 and duration (3-8 hours). Can there be a relationship between the tow (a fib and diabetes insipidus?) I am 50 years old and otherwise healthy, exercise regularly, eat well. Any info out there? MBB1