Diet Supporting Urinary System Function

Urinary tract infections (UTIs) are among the most prevalent reasons for medical consultations. They account for roughly 40% of hospital-acquired infections and 10–20% of post-hospitalization cases (M. Holecki et al., 2015). Under normal physiological conditions, urine in the bladder, ureters, renal pelvis, and calyces of the kidneys is sterile. UTIs are caused by pathogenic microorganisms that invade the urinary tract. The most common pathogens are Gram-negative bacteria from the Enterobacteriaceae family, with Escherichia coli, particularly uropathogenic strains (UPEC – Uropathogenic Escherichia coli), being the predominant culprits, as they induce inflammation in the urinary tract. In women, the infection process begins with bacterial colonization of the urethral opening, followed by migration into the bladder. This phenomenon is frequently associated with the transmission of microorganisms during sexual intercourse due to the proximity of the vagina, anus, and urethral opening. In men, the infection may spread to the epididymis and prostate.

There is no one effective diet that will prevent lung disease or prostate disease. However, due to the recurrent problem of long-term lung infections and continuous antibiotic treatment, the basics of healthy eating should also be considered as a final option. The dietary menu rich in animal fats, alcohol, carbonated drinks, and high-processed products, therefore, adversely affects health and increases the risk of infection, including the digestive system. Given the recurring problem of prolonged lung infection and ongoing treatment with antibiotics, it is also worth considering as a last resort.

Cranberry-based products (juices, extracts, capsules, tablets) are widely used for the prevention and treatment of urinary tract infections, including cystitis. Cranberries are rich in nutrients and bioactive compounds, including polyphenols with antioxidant properties. Both the North American species (Vaccinium macrocarpon) and the European species (Vaccinium oxycoccus) contain proanthocyanidins that inhibit the adhesion of Escherichia coli bacteria to urinary tract cells. Clinical trials have demonstrated that cranberry supplementation reduces the frequency of symptoms such as pain and burning during urination. Additionally, research has shown that regular consumption of cranberry juice lowers the risk of urinary tract infections by 39% (K. C. Maki et al., 2016). Studies across different age groups, including children, confirm the beneficial effects of cranberries on urinary tract health (I. Vasileiou et al., 2013; Ch. G. Krueger et al., 2013).

There is no one-size-fits-all diet that addresses all bladder issues. However, incorporating cranberries into your daily meals is advisable, as they contain numerous bioactive compounds with antioxidant and antibacterial effects. Additionally, ensuring a diet rich in unprocessed foods, vegetables, and fruits is crucial for maintaining urinary tract health.