Lately I've been drinking an astonishing amount of water - approximately 3-4 liters a day. The main thing that seems to come up on Google and on health sites for this problem is hypothyroidism or other hormone problem. Has anyone else experienced this in conjunction with an ED (for reference, I'm ED-NOS, mainly restricting, but occasionally purging)? Is there any way that starving oneself could screw up thyroid function? At least it makes the work-day a lot less monotonous, as I have to trot down to the bathroom about every hour. Heh.