Cystitis is an infection and subsequent inflammation of the bladder. It typically manifests through urinary symptoms such as burning and/or pain—medically termed "dysuria"—an increased frequency and urgency of urination, the occasional presence of blood in the urine (known as "hematuria"), and, finally, suprapubic pain. This condition affects women more frequently, due to the anatomical characteristics of the female urogenital system, which create a predisposition for microbes to enter the bladder. In women, the urethra—the duct connecting the bladder to the outside of the body—is approximately three times shorter than in men. This significantly increases the likelihood that pathogenic bacteria from the anal or vaginal regions will come into contact with the urethra, successfully ascend it, and colonize the bladder. An epidemiological study conducted in the United States in the early 2000s revealed that, by the age of 32, approximately half of all women will have experienced at least one episode of cystitis. Given the prevalence of this condition, it is particularly important to examine its causes, how it manifests, and the potential approaches for effectively managing the disorder.

The causes of cystitis

As previously mentioned, cystitis is caused by the colonization of the bladder lining by bacteria. The infection—most commonly linked to the bacterium Escherichia coli—can be either acute or recurrent. When three or more episodes of cystitis occur within a single year, it is classified as "recurrent" or "relapsing" cystitis. Conversely, if the infection reappears—even multiple times—after an interval of at least six months, these are considered independent instances of "acute" cystitis. Clinically, cystitis is further categorized as either "uncomplicated" or "complicated." The distinction lies in the fact that, in the latter case, pre-existing conditions place the patient at an increased risk of developing complications—such as the spread of the infection to the kidneys—or failing to respond effectively to the prescribed treatment. Potential risk factors include, for example, malformations of the urogenital tract, impaired bladder function, renal insufficiency, the presence of kidney stones, pregnancy, or diabetes. Beyond anatomical predisposition—which cannot be altered—there are certain behaviors and preventive measures that, when adopted as part of a daily routine, can help reduce the risk of developing cystitis.

Precautions to follow

The first set of recommendations concerns diet. A balanced, fiber-rich diet promotes bowel regularity and intestinal health, helping to prevent chronic inflammation. Such inflammation can alter the permeability of the intestinal epithelial cells, potentially allowing gut bacteria to escape and spread to other areas of the body, including the urinary tract and the bladder. Furthermore, maintaining good hydration offers a dual benefit: it supports proper bowel function while also encouraging frequent and abundant urination, which empties the bladder and “cleanses” it of potential pathogens. Finally, the consumption of American cranberry (Vaccinium macrocarpon) is recommended for the prevention of cystitis. This fruit contains specific types of tannins—a family of organic compounds naturally found in various plants that possess antimicrobial properties—which interfere with the ability of bacteria to adhere to the bladder wall, a necessary step for an infection to develop.

Finally, there are some considerations regarding intimate hygiene. The first recommendation is to pay close attention to how the perianal area is cleaned after a bowel movement. It is always best to wipe in a direction away from the vulvar region, so as not to carry microbes from the anal area toward the nearby vulvovaginal area. The second suggestion concerns maintaining the natural vaginal flora, which, as is well known, plays an important role in protecting against uropathogenic microorganisms. Changes in the pH of the vaginal mucosa can favor the survival of pathogenic bacteria, such as Escherichia coli. Furthermore, in the event of inflammation—which can be caused by various factors, including stress, the use of unsuitable underwear, or minor mechanical trauma during sexual intercourse—the likelihood of pathogenic microorganisms migrating into the lower urinary tract increases. For these reasons, proper intimate hygiene, combined with the use of very gentle cleansers enriched with antimicrobial ingredients, is particularly recommended for individuals prone to cystitis. Substances such as tea tree oil, calendula extract, and vitamin B5—which possess natural antimicrobial, anti-inflammatory, emollient, and healing properties—can help prevent pathogenic bacteria from ascending toward the bladder.