But if you’re constantly refilling your cup without relief, it could signal another health problem.
Dehydration means your body doesn’t have enough water to carry out normal tasks, and thirst is the main symptom. It can happen for a lot of reasons, such as exercise, diarrhea, vomiting, and too much sweating.
Besides wanting water, other signs can include:
Kids who are dehydrated might also:
Thirst you can’t seem to quench, what doctors call polydipsia, is one symptom of diabetes. When you have this disease, your body doesn’t make enough of the hormone insulin or doesn’t use it properly. It causes too much sugar (called glucose) to build up in your body.
Glucose in your urine draws in more water, so you pee more often. That leaves your body wanting to replace the fluid you’re losing.
Along with thirst and more visits to the restroom, other symptoms of diabetes include:
Despite its name, this condition isn’t related to diabetes. It happens when your body doesn’t make enough of a hormone that helps your kidneys control the amount of water in your body. Excessive thirst is one of the major symptoms.
If you have diabetes insipidus, you may also have:
- The urge to pee often
When your mouth feels very dry, it can make you thirsty. Usually, it happens because the glands in your mouth make less saliva. You may get it because of medications you take, treatments for other conditions like cancer, diseases like Sjogren’s syndrome, nerve damage in the head and neck, or tobacco use.
If your glands don't make enough saliva, you may have other symptoms, such as:
Anemia means your body doesn’t have enough healthy red blood cells. Some people are born with it, while others get it later in life. There are a lot of things that can cause it, including diseases, a poor diet, or heavy bleeding.
Mild anemia probably won’t make you thirsty, but you might find yourself craving more water if the condition gets severe.
Other symptoms include:
Hypercalcemia means the calcium levels in your blood are above normal. Causes include overactive parathyroid glands (hyperparathyroidism), another illness (tuberculosis, sarcoidosis), and even cancer (lung, breast, kidney, multiple myeloma). Besides thirst, symptoms of hypercalcemia may include:
- More frequent urination
- Stomach upset
- Nausea and vomiting
- Bone pain and muscle weakness
- Brain issues: Confusion, fatigue, and depression
- Heart issues (rare): Racing pulse or skipped beats (arrhythmia) and other heart problems
How Can You Quench Your Thirst?
The answer depends on what is making you so thirsty. Drinking more water is a good place to start. But if you can’t satisfy your craving for it, talk with your doctor.
Whatever the cause, don’t just live with it. Most of the conditions that cause thirst are treatable.