If you manage type 2 diabetes, you're probably focused on A1C, blood sugar targets, and the long-term complications most commonly discussed: heart disease, kidney disease, neuropathy, and eye problems. But there's one complication that's both extremely common and consistently undertalked about: urinary incontinence.
Research shows that people with diabetes are significantly more likely to develop urinary incontinence than those without -- and in many cases, the diabetes itself is the direct cause. Understanding that connection isn't just interesting background knowledge. It changes how you approach both conditions and opens up management strategies that address both at once.
How Common Is Incontinence in People with Diabetes?
The numbers are striking. Studies consistently show that women with diabetes have roughly twice the risk of developing urinary incontinence compared to women without diabetes. For men, diabetes is one of the primary drivers of urinary urgency and frequency after prostate issues are accounted for. The risk increases with the duration and severity of the diabetes -- people with longer-standing or poorly controlled diabetes face higher rates than those who are recently diagnosed or well controlled.
Yet despite how common it is, most people with diabetes don't connect the two. They manage their bladder symptoms and their blood sugar as separate problems -- often with separate healthcare providers -- when in fact both may respond to the same underlying intervention: better blood sugar control.
The Four Main Connections Between Diabetes and Incontinence
1. Diabetic Neuropathy and Bladder Nerve Damage
This is the most direct and most significant connection. Diabetic neuropathy -- nerve damage caused by prolonged exposure to high blood sugar -- is well known as a cause of numbness and pain in the feet and legs. But the same process affects nerves throughout the body, including the nerves that control the bladder.
The bladder is controlled by an intricate network of nerves that manage two opposing functions: storing urine (keeping the bladder muscle relaxed and the sphincter closed) and emptying urine (contracting the bladder muscle and relaxing the sphincter at the right time). When neuropathy damages these nerves, both functions can be impaired:
- Overactive bladder from nerve damage: When the sensory nerves that tell you the bladder is filling are damaged, the bladder may not receive normal filling signals -- then suddenly produce an overwhelming urge to urinate with little warning. This leads to urgency incontinence: the sudden, intense urge to go that results in leakage before you can reach the bathroom.
- Underactive bladder from nerve damage: When the motor nerves that signal the bladder to contract are damaged, the bladder may not empty properly. This leads to overflow incontinence -- the bladder fills beyond capacity and urine leaks out continuously in small amounts. People with this type often feel like they never fully empty, dribble constantly, or experience a weak, interrupted urine stream.
- Reduced sensation: Some people with diabetic bladder neuropathy lose the normal sensation of bladder fullness entirely -- they don't feel the urge to urinate until the bladder is severely overfull, making accidents more likely.
Diabetic cystopathy -- the clinical term for diabetic bladder dysfunction caused by neuropathy -- is estimated to affect 25 to 85% of people with diabetes, though many cases are undiagnosed because people don't report symptoms or attribute them to aging rather than diabetes.
2. Polyuria: High Blood Sugar Increases Urine Volume
When blood glucose levels are above the kidney's reabsorption threshold (approximately 180 mg/dL), glucose spills into the urine. Glucose in the urine draws water with it through osmosis -- a process called osmotic diuresis. The result is significantly increased urine production: more urine, more frequently, creating urgency and frequency that feels like -- and often is mistaken for -- overactive bladder.
This is why frequent urination and urgency are classic early symptoms of undiagnosed or poorly controlled diabetes. And it's why people who achieve better blood sugar control often find that their urinary symptoms improve significantly without any bladder-specific treatment at all. The bladder itself may be completely normal -- the problem is the volume of urine the kidneys are producing.
For people already managing incontinence, periods of elevated blood sugar -- from illness, stress, dietary changes, or medication adjustments -- can cause sudden, frustrating worsening of leakage that seems to come out of nowhere. Understanding the blood sugar connection helps explain these fluctuations and points to the solution.
3. Insulin Resistance and Bladder Dysfunction
Beyond neuropathy and polyuria, research has identified a more direct role for insulin resistance itself in bladder dysfunction. Insulin receptors are present in bladder tissue, and insulin plays a role in regulating bladder muscle function. When insulin resistance is present, bladder muscle cells may not respond normally to insulin signaling, contributing to detrusor overactivity (the involuntary bladder muscle contractions that cause urgency incontinence).
Chronic low-grade inflammation -- which is elevated in people with insulin resistance and type 2 diabetes -- also affects bladder function. Inflammatory mediators can sensitize bladder nerves, making the bladder more reactive and increasing urgency and frequency. This inflammatory pathway is one reason why systemic approaches to improving insulin sensitivity (diet, exercise, weight management) tend to improve bladder symptoms alongside blood sugar control.
4. Recurrent Urinary Tract Infections
People with diabetes are significantly more susceptible to urinary tract infections (UTIs) than the general population, for several reasons: high glucose levels in the urine create an ideal growth medium for bacteria; diabetic neuropathy can prevent complete bladder emptying, allowing bacteria to multiply in retained urine; and immune function is often impaired in people with poorly controlled diabetes. Women with diabetes face up to three times the UTI risk of women without diabetes.
UTIs directly cause and worsen urinary incontinence -- particularly urge incontinence. Bladder irritation from infection creates sudden, powerful urges that are difficult to suppress. Recurrent UTIs in a person with diabetes can create a cycle where the infection worsens incontinence, the incontinence creates hygiene challenges that increase infection risk, and the cycle continues. Breaking it requires both treating the infection and addressing the underlying blood sugar control that makes infections more frequent.
Other Contributing Factors
Beyond the four main mechanisms above, several other diabetes-related factors contribute to incontinence risk:
- Obesity: Excess body weight -- which both contributes to type 2 diabetes and is often present alongside it -- puts sustained pressure on the bladder and pelvic floor, worsening stress incontinence (leakage with coughing, sneezing, or exercise). Weight loss consistently improves both insulin sensitivity and stress incontinence.
- Medications: Some medications used in diabetes management and related conditions can affect bladder function. Diuretics prescribed for hypertension (which is common in type 2 diabetes) increase urine production. Some older diabetes medications affect fluid balance. Reviewing your medication list with your provider for bladder effects is worthwhile if symptoms are significant.
- Reduced mobility: Diabetic complications including peripheral neuropathy, foot problems, and joint pain can reduce mobility and make getting to the bathroom quickly more difficult -- converting manageable urgency into incontinence episodes.
What This Means for Management
Understanding the diabetes-incontinence connection has direct practical implications for how you manage both conditions.
Blood sugar control is bladder control
For people whose incontinence is driven by polyuria from high blood sugar, improving blood sugar control can dramatically reduce urinary symptoms without any bladder-specific treatment. Every percentage point drop in A1C reduces the amount of glucose spilling into the urine, reducing osmotic diuresis, and reducing urine volume and frequency.
This means that consistent glucose monitoring -- knowing where your blood sugar is and how it's trending -- is directly relevant to bladder health, not just diabetes management. The True Metrix Blood Glucose Meter delivers accurate results in 4 seconds, and keeping your True Metrix Pro Test Strips stocked ensures you always have what you need to stay on top of your numbers. The Autolet Impression Lancing Device with seven depth settings makes the frequent testing that tight control requires more comfortable, and HTL-Strefa MedLance Plus Safety Lancets provide a consistently sharp, minimally painful stick.
For insulin users, consistent and comfortable injection technique matters for maintaining the control that benefits both blood sugar and bladder. The BD Veo Ultra-Fine Insulin Syringes and Advocate Short Pen Needles make daily injection routines as comfortable as possible.
Pelvic floor exercises help regardless of cause
Pelvic floor muscle training (Kegel exercises) is one of the most effective non-medication treatments for urinary incontinence, regardless of whether diabetes is involved. Strong pelvic floor muscles improve sphincter control, reduce urgency, and decrease leakage episodes. For people with diabetes-related incontinence, pelvic floor training works alongside blood sugar management -- not instead of it. If you haven't been formally taught how to do Kegels correctly (most people haven't), a pelvic floor physical therapist can make a significant difference in a short number of sessions.
Bladder habits and timing
Bladder training -- gradually extending the time between bathroom trips to retrain the bladder to hold more urine -- is effective for urge incontinence whether caused by diabetes or not. Timed voiding -- scheduling bathroom trips at regular intervals regardless of urge -- is particularly helpful for people with reduced bladder sensation from neuropathy, since they may not receive normal urgency signals until the bladder is already overfull.
Reducing bladder irritants -- caffeine, alcohol, carbonated drinks, artificial sweeteners, and acidic foods -- helps reduce urgency and frequency for most people with incontinence. Given that caffeine and alcohol can also affect blood sugar, reducing them benefits both conditions simultaneously.
Weight management
For people with type 2 diabetes and obesity-related incontinence, weight loss is one of the most powerful interventions for both conditions. Even a 5 to 10% reduction in body weight improves insulin sensitivity, reduces blood sugar, and decreases the pressure on the bladder and pelvic floor that contributes to stress incontinence. This is one area where GLP-1 medications like Ozempic and Wegovy, which produce significant weight loss alongside blood sugar improvement, may produce incontinence benefits as a secondary effect of the weight loss -- though as we discussed in a previous blog, the transition period involves its own pelvic floor considerations.
Talk to both your diabetes care team and a urologist
Because the diabetes-incontinence connection is underrecognized, it's worth raising explicitly with your healthcare provider rather than assuming they'll connect the dots. Let your diabetes care team know you're experiencing incontinence -- they can assess whether your blood sugar control is a contributing factor and adjust your management accordingly. A referral to a urologist or urogynecologist can assess the bladder-specific component, including whether incomplete emptying (a sign of diabetic cystopathy) is present. A WOC nurse can assist with practical incontinence management strategies and product selection.
Managing Incontinence Day-to-Day While Addressing the Underlying Cause
Whether you're working on blood sugar control, pelvic floor training, weight management, or medical treatment -- progress takes time. In the meantime, having reliable incontinence products in place maintains dignity and confidence and reduces the anxiety that can itself worsen urgency symptoms.
At Best Buy Medical Supplies, we carry a full range of adult incontinence products designed for different levels of leakage and different lifestyles -- from discreet Poise Incontinence Pads for light leakage to Tranquility Premium OverNight Absorbent Underwear for heavy or overnight protection. Prevail Night Time Underpads provide reliable bed protection for nighttime symptoms that are particularly common when blood sugar control fluctuates overnight.
For skin protection -- important for anyone with diabetes, where skin integrity is already a concern -- the Smith and Nephew Skin-Prep Protective Barrier Wipes help protect perineal skin from the moisture exposure that incontinence creates.
The Bottom Line
Urinary incontinence is not an inevitable or unrelated consequence of aging for people with diabetes. It's a condition with identifiable, treatable causes that are directly connected to the diabetes itself -- neuropathy, polyuria, insulin resistance, and recurrent UTIs. Addressing those root causes through better blood sugar control, weight management, and appropriate medical care can improve both conditions simultaneously.
If you have diabetes and incontinence, you're managing two conditions that are more connected than most people realize -- and improving one may be the most effective thing you can do for the other.
Stock Up on What You Need
At Best Buy Medical Supplies, we carry everything you need for both diabetes management and incontinence care -- glucose meters, test strips, lancets, insulin syringes, and pen needles alongside a full range of incontinence products including absorbent underwear, briefs, pads, underpads, and skin care. Browse both collections to make sure you have everything you need.
Disclaimer: This information is intended for educational purposes only and should not replace advice from your healthcare provider. If you have diabetes and are experiencing urinary incontinence, speak with your doctor to identify the underlying cause and appropriate management approach for your specific situation.