Call me crazy, but can I just share what I found on the internet about this? Back in the 80s, they gave some men thyroid releasing hormone, the chemical that your brain makes when you are hypothyroid. 95% of them developed substantial urinary urgency. Also, some researchers gave lady rabbits a drug to make them hypothyroid. One month later, those rabbits developed urinary retention. Then, there were 65 women with hyperthyroidism who were started on therapy and, compared to women without thyroid problems, they had twice as many urinary symptoms. Last, in the National Health and Nutrition Examination Survey of 2,800 women, a history of thyroid problems was associated with a doubling of the odds of urinary incontinence. I mean, I feel sorry for the bunnies but I think there's something there.