I had a water deprivation test in May to rule out suspected diabetes insipidus (where the body is unable to concentrate urine). I was drinking and passing huge huge volumes of fluid, starting the previous August.
Aside from now knowing that I do
not having diabetes insipidus, I am none the wiser, except to put it down to 'Snapsy really likes to drink.' The problem has lessened, although I still drink more than 5l a day (better than the 10-13l I was consuming at the onset of the problem.
Factors that are likely to have contributed to my issue:
Increased exercise
Increased salt intake
Raging kidney infection that had me off work weak as a kitten for 3 months
Switching to a lower carb lifestyle
A fondness for diet ginger beer (I love that stuff)
Ditto sugar-free squash! I love the taste of the stuff I drink
My blood sugars were not in the ballpark to cause either the polydipsia and polyuria I was experiencing - I'm rarely out of the ideal range.
My endocrinologist pointed out four things cause polydipsia and polyuria:
Uncontrolled diabetes mellitus
Diabetes insipidus
An excessive alcohol consumption habit
Psychological factors - ie 'I just like drinking'
There are likely to be other factors too, I would think - but these are the four he was looking at in my case. The only one of the four that applies to me is the fourth.
@AdamJames has anyone asked you to collect and measure your output? Might be worth talking to them about DI - it's a very rare condition but very treatable, I gather.
Love Snapsy