For a few months now I ve been constantly thirsty. I count my ounces and often down 140-160 oz a day (I m 120 lbs). It s just normal water - not caffeine or sugary drinks. My throat is extremely dry, but my mouth is not. I m not dehydrated (no problems crying or sweating), nor do I exercise beyond ensuring I get in a minimum of 10,000 steps a day. I was tested for diabetes, but that came back negative. I ve tried biotine for my throat, but it doesn t help with the dryness or thirst. Any ideas?