Overactive bladder diet: Foods to eat and avoid

An overactive bladder (OAB) can cause considerable disruption to everyday life. People with an OAB may experience urinary incontinence and wake up multiple times during the night (nocturia).

There are several possible underlying reasons for an OAB. These include:

  • Neurological disorders that affect the nervous system, such as multiple sclerosis or Parkinson’s disease.
  • Diabetes. One of the main symptoms of both type 1 and type 2 diabetes is the frequent passing of large amounts of urine, known as polyuria.
  • Urinary tract infections.
  • Diuretic medications, commonly referred to as water pills. People with cardiac conditions often take diuretics to lower blood pressure, but these drugs also increase urination.
  • Older age and cognitive decline.
  • Excessive intake of caffeine or alcohol.

What to eat and what to avoid

Making alterations to diet and lifestyle can have an impact on an overactive bladder. The recommended dietary changes include:

Fluid intake

For people with an OAB, there is a fine line between drinking too much and not drinking enough.

People should try to stick to the recommended 6 to 8 glasses of fluid each day. The body can regulate liquid in the body, excreting unwanted fluid via the urine. Therefore, exceeding the recommended amounts is likely to lead to more time in the bathroom.

However, it is important not to get dehydrated as this will result in more concentrated urine, which may further irritate the bladder lining. It is possible to monitor hydration levels by checking the color of the urine. Dark yellow urine could be a sign of dehydration.

It is best not to drink a lot at any one time, but to spread drinks across the course of the day. It is a good idea to stop drinking a couple of hours before bedtime to minimize the likelihood of getting up in the night.

Those with an OAB may have recognizable symptoms, but each person responds differently to treatment. Other suggestions that may help reduce symptoms include:

Strengthening the pelvic floor muscles

The pelvic floor muscles are located next to the bladder and provide support and strength to the bladder.


Regular physical activity may strengthen the pelvic floor muscles and help decrease the risk of developing urge incontinence. However, it is also possible that heavy physical exercise may aggravate symptoms, so people should be careful not to overexert themselves.

Not smoking

Smoking can irritate the bladder and is a risk factor for bladder cancer.

Bladder training

Alongside the pelvic floor muscle exercises, bladder training aims to make the bladder muscles stronger so it can hold urine for longer periods of time.

Reaching and maintaining a healthful weight

Being overweight or obese has been identified as a risk factor for urinary incontinence.

Adults who are overweight are encouraged to lose weight and maintain weight loss by exercising regularly. They should also eat more fruits and vegetables, choose wholegrain carbohydrates, and include lean proteins, such as fish, lentils, and beans, in their diet.


Doctors frequently prescribe drugs called antimuscarinics for an OAB. These work on the muscles surrounding the bladder to help control the random contractions that cause frequent urination. However, they have some unfavorable side effects such as constipation and dry mouth.

Bladder injections

It is possible that nerve stimulation or Botox injections may be a way of controlling the signals between the brain and bladder.


In rare cases, people may need surgery to correct bladder abnormalities and reduce the symptoms of OAB.

Using of absorbent pads or undergarments

In cases where surgery or medications could be risky, for example when advancing age is the cause of the OAB, it may be preferable to consider management techniques to absorb urine.


Studies suggest that acupuncture may be effective in helping with the symptoms of an OAB, either as an alternative approach or alongside medication.


An OAB can disrupt daily life. Making healthier choices, including following a balanced diet, can help maintain a healthy bladder. Keeping a food diary can be a helpful way to notice any correlation between diet and symptoms.

It is recommended to seek the advice of a medical professional to talk through treatment options.

These may include medication, exercises to train and strengthen the bladder, and behavioral and lifestyle changes. A combination of OAB treatments is likely to have the best effect in the long-term.

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