Diabetes is a common chronic health condition in which the body has trouble controlling blood sugar levels. When blood sugar remains high over time, it can damage many parts of the body, including the heart, kidneys, eyes, and nerves.
One common but often overlooked problem caused by diabetes is dry mouth. Let’s take a closer look at what this is, how it affects your well-being, and how to treat it.
What is Dry Mouth
The medical term for dry mouth is xerostomia. It happens when the mouth does not make enough saliva, the liquid that keeps the mouth moist. When there is not enough saliva, the mouth can feel dry, sticky, or uncomfortable.
Dry mouth can increase the risk of cavities, gum disease, mouth sores, and infections. For some people, it can affect taste, make wearing dentures uncomfortable, and lead to trouble eating or sleeping.
Why Saliva Matters
Saliva helps you chew and swallow food, making eating easier and safer. It also helps you speak clearly. Saliva protects your teeth and gums by washing away food and bacteria to prevent cavities, gum disease, infections, and bad breath.
The Link Between Diabetes and Dry Mouth
There are several reasons why people with diabetes are more likely to develop dry mouth.
- Frequent Urination: When blood sugar levels are high, your body tries to remove the extra sugar through frequent urination. This causes the body to lose more fluids, which can lead to dehydration, which often leads to dry mouth.
- Nerve Damage: Diabetes can cause nerve damage, also called neuropathy. Nerves help control many body functions, including saliva production. When nerves that control the salivary glands are damaged, the glands may not work efficiently to produce adequate amounts of saliva.
- Medications: Many people with diabetes take daily medications. Some diabetes medicines can cause dry mouth as a side effect. Older adults may also take medicines for blood pressure, depression, allergies, pain, or bladder problems. These medicines can also reduce saliva and make dry mouth worse.
Symptoms of Dry Mouth in People with Diabetes
Dry mouth can feel different for each person. Some symptoms are:
- A dry or sticky feeling in the mouth
- Trouble chewing or swallowing food
- Thick or stringy saliva
- Dry or cracked lips
- Sore throat
- Difficulty speaking clearly
- Bad breath
- Changes in taste
- Burning or tingling feeling in the mouth or on the tongue
Dry mouth can also cause the tongue to feel rough or dry and may make dentures uncomfortable to wear. Over time, these symptoms can interfere with eating, talking, sleeping, and overall comfort.
Oral and Dental Problems
Dry mouth that persists for a long time can lead to several oral health problems. Without enough saliva to wash away food particles and bacteria, the risk of tooth decay and cavities increases. Dry mouth can also contribute to gum disease, which may cause swelling, bleeding gums, and tooth loss over time.
In addition, dry mouth can cause ulcers or sores, and cracks in the tissues of the mouth, making them more sensitive and painful. People with dry mouth are also more likely to develop infections like oral thrush, which is a yeast infection in the mouth.
Dry Mouth and Poor Nutrition
Since dry mouth can make it difficult to chew and swallow food, you may begin eating less, or avoiding certain healthy foods. This increases the risk of poor nutrition.
Some foods that are difficult to eat because of dry mouth:
- Dry foods like crackers, toast, and rice cakes. These are hard to chew if there isn’t enough saliva to moisten them.
- High-fiber foods like raw vegetables or whole-grain breads. These can feel rough against the inside of cheeks.
- Acidic foods like citrus fruit (oranges, lemons, grapefruits), tomatoes, or vinegar-based foods can sting.
- Spicy foods, chili flavors, and hot sauces.
- Sticky foods like nut butters, raisins, prunes and other dried fruit, and granola bars. These cling to the teeth and gumline because there isn’t enough saliva to help them loosen and slide off.
How Doctors Diagnose Dry Mouth
Doctors diagnose dry mouth by listening carefully to your symptoms and asking questions about your overall health. They will often ask about your diabetes management, including how well your blood sugar is controlled, and review your blood glucose levels.
During an exam, your doctor may look closely at your mouth, tongue, gums, and the roof of your mouth to check for dryness, cracks, sores, or signs of infection. In some cases, they may measure how much saliva your mouth produces or perform special tests to check the function of your salivary glands.
Doctors will also review all of your medications, including those taken for other health problems, because some medicines can cause or worsen dry mouth. In certain situations, your doctor may refer you to a dentist or an oral health specialist for further evaluation.
Treatment for Dry Mouth Caused by Diabetes
- Managing Blood Sugar
Keeping blood sugar within a healthy range is one of the most important ways to help improve dry mouth. When blood sugar is well-controlled, saliva flow may improve, reducing dryness and discomfort. Following your diabetes care plan, taking medications as prescribed, eating balanced meals, and checking blood sugar regularly are key steps.
- Staying Hydrated
Drinking water frequently throughout the day can help keep your mouth moist. Sipping water with meals, carrying a water bottle, and avoiding excessive caffeine or alcohol can reduce dryness. - Quitting smoking
Cigarettes and other tobacco products, including vapes and e-cigarettes, can worsen dry mouth. Medicare covers counseling to help you stop smoking or using tobacco products.
- Reviewing Medications
Talk to your doctor about all medications you take. In some cases, adjusting the type, dose, or timing of medications can help reduce dry mouth. - Oral Hygiene
Good oral care is very important. Brush your teeth twice a day and floss daily. See a dentist regularly to catch problems early and prevent cavities, gum disease, and infections.
- Saliva Enhancers
Sugar-free gum and lozenges can help stimulate saliva, and you can find over-the-counter products like sprays, gels, and mouth rinses that help keep the mouth moist and more comfortable.
- Prescription Medications
In some cases, doctors may prescribe medicines that help the body make more saliva. These are usually used when dry mouth is severe. These medicines can have side effects, so doctors carefully decide when they are needed.
Living Well with Diabetes and Dry Mouth
Living well means staying consistent with daily care. Drink water often, manage blood sugar, and keep up with dental visits. Small daily habits can protect your mouth and improve comfort.