I know this is an old thread but...
I'm exactly the same. I don't drink anywhere near enough. I'm sitting here at 5am as I've got a flare up of cystitis which I'm sure has been brought on because of my constant dehydrated state. I wanted to share this info with you all as it surprised me and I'm going to try this 'fix' to hope I can re-start my thirst mechanism!
Here's part of the article I found and the 'fix' is at the bottom. This isn't a 'click this link' to make anyone part with cash. It's a genuine medical article about us dehydrated lot!
How can a chronically dehydrated person not be thirsty? It doesn’t make sense. True, it doesn’t make sense, but there is a reason.
First, let’s define what exactly dehydration is. It’s all about the cells. Our cells need water in order for our bodies to function, and that water needs to be continuously replaced. In much the same way that our bodies absorb water then excrete waste in the form of urine, our cells absorb fresh water and excrete waste fluid, and that waste is then disposed through various means, including urination, sweating and even breathing. Moist breath anyone?
When those cells don’t get the fresh water they need, we’re dehydrated, and the body lets us know it needs water through the thirst mechanism. However, that thirst mechanism has been hampered in many of us. Basically, we’ve lost it because we’ve misplaced the gift of metabolic balance in our bodies. The human body is a motion machine. Through our sedentary lifestyles, we’ve reduced so much of our motion that we’ve compromised our alignment and altered our cellular energy, and one result is a hindered thirst function.
So how do we solve this problem? Some experts say to drink more water, but that usually doesn’t work because it quickly grows uncomfortable. Since the cells have shut off that thirst mechanism, they’re tenaciously retaining the old fluid, so the water that enters the body just sits in the stomach rather than being absorbed by the cells throughout the body.
The fix:
Get a small shot glass. Fill it up with water and drink three to five shots in quick succession, one right after the other. Wait 30 minutes then do that again. Do that in the morning and in the evening, and by the second day, you’ll probably start noticing your mouth getting dry more frequently throughout the day. Do that routine for a week, and your thirst mechanism should be in full functioning order.