--- title: "Diabetes and gum disease: what the NIH and CDC say" description: "Diabetes raises the odds of gum disease, and gum disease can make blood sugar harder to control. Signs, dentist tips, fruity breath, supplement cautions." canonical: https://oralbench.com/diabetes-and-gums alternate_html: https://oralbench.com/diabetes-and-gums language: en-US last_updated: 2026-09-27 type: guia --- # Diabetes and your gums: how each one makes the other worse 1. [Home](https://oralbench.com/) 2. [Mouth & gums](https://oralbench.com/oral-health) 3. Diabetes and your gums: how each one makes the other worse Diabetes reaches your gums through your saliva, and gum disease can push back on your blood sugar. The NIH and CDC pages agree on what to watch for and on who belongs on your care team: your dentist. By **OralBench editorial team**Updated September 27, 2026 ![Diabetes and your gums: how each one makes the other worse](https://oralbench.com/img/guia-diabetes-and-gums-640.webp) Short answer People with diabetes have a higher chance of periodontal (gum) disease, says the NIH's dental institute (NIDCR), and the link runs both ways: "having gum disease may make your blood sugar harder to control." High blood glucose can raise the glucose in your saliva, and that glucose, per the NIDDK, "can feed harmful bacteria" that form plaque. NIDCR's advice is to control your blood glucose, brush twice a day, floss regularly, keep your dental checkups and tell your dentist you have diabetes. Five tooth supplements we review list blood sugar ingredients such as chromium or berberine, and ODS says chromium taken with insulin or other diabetes medicines "might cause low blood sugar levels," so talk to your doctor before taking any of them. ## How diabetes and gum disease feed each other The first link is saliva. The NIDDK says "Diabetes can affect your mouth by changing your saliva": the disease, and some of the medicines taken for it, can make the salivary glands produce less, and with less saliva the risk of cavities and gum disease goes up. High blood glucose also builds up in the saliva that's left, and that glucose "can feed harmful bacteria" that form plaque and, left in place, harden into tartar at the gum line. The CDC adds a third piece: "High blood sugar can weaken white blood cells," your body's main defense against infections in the mouth. Then it turns around. "In turn, having gum disease may make your blood sugar harder to control," says the NIDCR, and the CDC says getting gum disease under care "may help lower your blood sugar over time." How well your diabetes is managed matters a lot here. The NIDCR says people with poor blood glucose control "get gum disease more often and more severely than people whose diabetes is well controlled," and the NIDDK calls gum disease "the most common and serious mouth problem related to diabetes." The numbers show the cost. Adults 20 and older with diabetes are "40% more likely to have untreated cavities" than similar adults without it, according to the CDC. Almost 25% of US adults with diabetes aged 50 and older have severe tooth loss, compared with about 16% of those without diabetes, per the NIDDK. And the gap that's easiest to close: "About 60% of US adults with diabetes had a medical visit in the past year, but no dental visit," the CDC reports. ## What to look for in your mouth ### Gums that bleed or pull back Gums that are red, swollen or bleeding, or that recede and pull away from your teeth, are on the NIDDK's list. The NIDCR says some people first notice gums that "appear swollen and bleed when they brush and floss." ### Teeth that shift Loose teeth and growing spaces between them, per the NIDDK. Periodontitis, the NIDDK explains, breaks down the bone and tissue that hold teeth in place. ### A mouth that stays dry The NIDDK calls dry mouth "an important sign of diabetes." A dry mouth also raises the risk of cavities and fungal infections, the NIDCR says; our dry mouth guide covers relief. ### White patches or soreness Diabetes raises the risk of thrush, "a fungal infection that causes painful, white patches in your mouth" (NIDDK). Our oral thrush guide explains why it calls for an antifungal, not a probiotic. ### Breath or taste that stays off "Bad breath that doesn't go away when you brush your teeth" is a warning sign on the NIDDK's list, and the NIDCR adds a bad taste in the mouth. ### What to do about any of them "See your dentist right away if you notice any signs or symptoms of mouth problems," says the NIDDK. ## Fruity breath is an emergency, not a gum problem One kind of diabetes breath has nothing to do with your gums. The CDC lists "fruity-smelling breath" among the signs of diabetic ketoacidosis (DKA), which it calls "serious" and says "can be life-threatening." It happens when the body doesn't have enough insulin, burns fat for fuel and builds up acids called ketones. It's most common in type 1 diabetes, but people with type 2 can get it too. It usually starts slowly, with being very thirsty and urinating a lot more than usual; later, and sometimes quickly, come fast, deep breathing, dry skin and mouth, a flushed face, headache, muscle stiffness or aches, being very tired, nausea and vomiting, and stomach pain. The CDC's instruction is to "go to the emergency room or call 911 right away" if your blood sugar stays at 300 mg/dL or above, your breath smells fruity, you're vomiting and can't keep food or drinks down, you're having trouble breathing, or you have several signs of DKA at once. That holds even if nobody has ever told you that you have diabetes: "Sometimes DKA is the first noticeable sign of diabetes in people who haven't yet been diagnosed," the CDC says. Our bad breath guide covers the everyday kinds of bad breath. ## Working with your dentist 1. ### Tell them everything The NIDDK's list: how long you've had diabetes, any diabetes-related problems, and every medicine you take. Keep your dentist posted on changes, including a rise in your blood glucose. Put supplements on that list too. 2. ### Agree on how often Ask how often you should come in for cleanings and checkups, says the NIDDK, and the CDC suggests the same question. If you feel nervous about the dentist, say so; the NIDDK says your dentist can adapt the visit to you. 3. ### Plan ahead for oral surgery High blood glucose raises the risk of infection after mouth surgery and can slow your recovery, per the NIDDK. Before extensive dental work, ask your doctor how often to check your blood glucose before and after, whether to change the dose or timing of any medicine, and how to handle soreness afterward. 4. ### Do your part at home The CDC's floor: brush at least twice a day with fluoride toothpaste and floss at least once a day. Tell your dentist if your dentures don't fit right or your gums are sore (NIDCR). 5. ### Quit smoking "Smoking makes gum disease worse," says the NIDCR, and the CDC says it can worsen your diabetes too. The NIDDK points to the National Quitline at 1-800-QUITNOW (1-800-784-8669). ## Tooth supplements with blood sugar ingredients Five of the 12 products we review list ingredients that the NIH's diabetes supplement pages discuss for blood sugar. All five are sold for teeth and gums, not for diabetes. Product Ingredients NCCIH or ODS discuss for diabetes Amount on the label Sold as DentaSmile Pro Chromium, berberine, cinnamon, bitter melon Chromium 400 mcg (1,143% DV); the herbs share a 200 mg blend with inulin, banaba and gynostemma, no split A daily chewable tablet for teeth and gums DentiVive Berberine, chromium, alpha-lipoic acid, ginseng, milk thistle No amounts and no supplement facts panel A capsule for teeth DentiCore Chromium 50 mcg (143% DV) A daily mineral tablet for teeth and gums OxyDental Chromium 50 mcg (143% DV), the same label numbers as DentiCore A daily chewable mineral tablet for teeth and gums Steel Bite Pro Berberine, milk thistle Milk thistle 200 mg; berberine inside a 571 mg blend of 13 ingredients, no split A capsule for teeth and gums Labels and seller pages read on September 25, 2026 (DentaSmile Pro, OxyDental and Steel Bite Pro on September 27, 2026); the full labels are in our reviews. The second column names only what NCCIH's "Diabetes and Dietary Supplements" page or the ODS chromium fact sheet discusses for diabetes, both read on September 27, 2026. ## If you take diabetes medicine Talk to your doctor before taking any of these five. On chromium, ODS is specific: "Taking chromium together with insulin might cause low blood sugar levels," and "If you take antidiabetes medicine, taking chromium dietary supplements might cause low blood sugar levels." NCCIH says "Berberine may interact with some medicines, possibly causing unwanted side effects," and that using herbal supplements such as cinnamon with conventional diabetes drugs "can cause unwanted side effects." Only the chromium comes with a number on these labels; the berberine, cinnamon and other herbs don't, so your doctor can't tell how much you'd be adding. DentaSmile Pro's page goes further and says its chromium "Supports healthy blood sugar levels." NCCIH, for its part, finds "weak evidence of a possible benefit" for chromium, cinnamon or berberine, then adds that most of those studies "have limitations in size" and differ in who took part, the formulas, the doses and the results, "leading to no clear conclusions." For bitter melon, ginseng and milk thistle, it says research "hasn't proven that any of these herbal supplements are effective," and a 2019 review of 10 studies found alpha-lipoic acid "no better than placebo at reducing levels of blood sugar." One NCCIH line is worth keeping above everything else on this page: "It's very important not to replace medical treatment for diabetes with an unproven health product or practice." For your gums, the plan is the one the NIDCR lays out: blood glucose control, brushing, flossing and a dentist who knows you have diabetes. ## Frequently asked questions **Does diabetes cause periodontal disease?** It raises the odds. The NIDCR says people with diabetes have a higher chance of periodontal disease, and the NIDDK calls it the most common and serious mouth problem related to diabetes. High blood glucose raises the glucose in saliva, which can feed the bacteria in plaque. **Can gum disease raise blood sugar?** The NIDCR says having gum disease "may make your blood sugar harder to control," and the CDC says getting it under care may help lower blood sugar over time. It's one more reason to keep your dental checkups. **Why does diabetes cause bad breath?** Usually through the mouth: the NIDCR lists persistent bad breath as a result of periodontal disease, and the NIDDK lists bad breath that doesn't go away with brushing as a warning sign. A fruity smell is different. The CDC lists it as a sign of diabetic ketoacidosis and says to go to the emergency room or call 911 right away if your breath smells fruity. **What does ketoacidosis breath smell like?** The CDC describes it as "fruity-smelling breath." It's a sign of diabetic ketoacidosis, which can be life-threatening: go to the emergency room or call 911 right away. The CDC notes it's sometimes the first noticeable sign of diabetes in people who haven't been diagnosed. **Can diabetes medicine cause dry mouth?** The NIDDK says diabetes and some of the medicines taken for it can make the salivary glands produce less saliva. It doesn't name which ones, so ask your doctor about yours. For relief, the NIDCR suggests drinking plenty of water and chewing sugarless gum; our dry mouth guide has the rest. **Are tooth supplements with chromium safe if I have diabetes?** Ask your doctor first. ODS says chromium supplements taken with insulin or other diabetes medicines "might cause low blood sugar levels." DentaSmile Pro, DentiCore, OxyDental and DentiVive contain chromium; DentaSmile Pro, DentiVive and Steel Bite Pro list berberine. ## Related pages Mouth & gums ### [Gum disease past the early stage: pockets, bone loss and the deep clean](https://oralbench.com/gum-disease) Periodontal (gum) disease is, in the NIDCR's words, "an infection that causes inflammation of the tissues that hold your teeth in place." It begins with swollen, red,… Read more Mouth & gums ### [Dry mouth: find the cause first, then the relief](https://oralbench.com/dry-mouth) Xerostomia is the technical term for dry mouth: not having enough saliva to keep your mouth wet. Read more Mouth & gums ### [Bad breath: the usual causes, the unusual ones, and what to do](https://oralbench.com/bad-breath) Halitosis is the medical name for bad breath. Read more Guides ### [Thrush in the mouth: the antifungal the CDC describes, and where probiotics fit](https://oralbench.com/probiotics-for-oral-thrush) Oral thrush is Candida, a yeast that normally lives in your mouth, growing out of control; the CDC lists white patches on the inner cheeks, tongue, roof of the mouth and… Read more Updated September 27, 2026. [See our full method](https://oralbench.com/how-we-choose) --- ## OralBench - OralBench, published by Grupo Marfre Automação e Tecnologia (Contagem, Brazil) - Email: contact@oralbench.com - Home: https://oralbench.com/ - llms.txt: https://oralbench.com/llms.txt · llms-full.txt: https://oralbench.com/llms-full.txt · sitemap: https://oralbench.com/sitemap.xml