Urinary microbiome and incontinence: what’s the connection?

Bacteria and microbiomes

A microbiome is the community of microorganisms - like bacteria, fungi and viruses - that live in a specific environment. The human body hosts many types of microbiomes, including those in the gut, on the skin and in the vaginal area. Bacteria are single-celled organisms that can be helpful or harmful depending on their role. When balanced, microbiomes support vital functions like digestion, immunity and protection against harmful pathogens. However, when disrupted, they can contribute to health problems such as chronic inflammation, digestive issues and metabolic disorders. Each person’s microbiome is unique, and ongoing research continues to reveal how microbial diversity influences both health and disease.

The urinary microbiome

The urinary microbiome consists of microorganisms that inhabit the urinary tract, especially the bladder and urethra. While bacteria make up the largest portion, it may also include viruses, fungi and other microscopic life forms. This microbial ecosystem plays a key role in defending against infections and supporting immune activity in the urinary system. When disrupted - due to repeated infections, catheter use, hormonal changes or certain medications - it can increase the risk of urinary tract infections, especially in women. Scientists are actively exploring how restoring microbial balance, possibly with the help of probiotics, may help protect and maintain urinary health.

How is the urinary microbiome linked to urinary incontinence?

Urinary incontinence is the involuntary leakage of urine, often linked to issues with bladder control or pelvic floor weakness. Studies have found that individuals with incontinence may also experience changes in their urinary microbiome. Contributing factors can include the use of absorbent pads, catheterization, bladder dysfunction, and reduced hygiene. These factors may lower beneficial bacteria while increasing the presence of potentially harmful species, leading to a greater risk of urinary infections. In turn, these infections may worsen symptoms of incontinence. To reduce these risks, it’s important to stay hydrated, maintain regular toilet habits, use appropriate hygiene practices and select incontinence products that protect without causing irritation. Some research suggests that certain probiotics may help restore a healthy urinary microbiome, but further studies are needed to confirm their long-term effectiveness and safety.