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Excessive Thirst That Won't Go Away
Feeling unquenchably thirsty — no matter how much water you drink — is one of the hallmark signs of high blood sugar. When glucose builds up in your blood, your kidneys work overtime to filter it out, pulling extra water from your tissues in the process. This makes you dehydrated, triggering intense thirst. If you find yourself constantly reaching for water and still feeling parched, your blood sugar may be dangerously high.