CRANBERRY AND VITAMIN C AS EFFECTIVE PREVENTIVE SUPPORT
Urinary tract infection (UTI) is a fairly common problem in dogs. Around 14% of dogs will develop a urinary tract infection at some point in their lives. Infections are more common in females than in males. Canine UTIs are often linked to a breakdown in the body’s defense mechanisms and overall immune resilience. A suspected UTI should always be examined by a veterinarian, who can prescribe an appropriate antibiotic if needed, but UTIs can also be supported through diet. There is already substantial research evidence on cranberry’s role in urinary tract wellbeing. Cranberry has been studied and found, when used regularly, to help prevent urinary tract infections by inhibiting bacteria from attaching to the bladder’s mucosal lining.
In human healthcare, cranberry is already included in official treatment recommendations for urinary tract infections, because antibiotic-resistant bacteria are increasing all the time. In dogs, as in humans, the bacteria that cause UTIs are most often intestinal bacteria: E. coli, Proteus species, staphylococci, streptococci, and enterobacteria. A dog with a urinary tract infection urinates more frequently than usual, and urination may be painful. Other symptoms can include urinary leakage, foul-smelling urine, or urine that contains blood. Sometimes the infection can also be completely symptom-free.
Bladder infections are more common in female dogs than in males, because the female urethra is shorter. Due to these anatomical differences, bacteria can enter the urinary tract more easily in females. A urinary tract infection is not inherently dangerous, although it can be painful and distressing. If left untreated, however, it can spread to the kidneys. Most UTIs respond well to treatment, but in some cases they can contribute to the formation of urinary stones.
Failure of defense mechanisms can lead to urinary tract infection
In many cases, infection is triggered by a temporary drop in immune function or a failure of normal protective mechanisms. When this happens, bacteria that have reached the bladder are able to attach to the bladder wall. Once attached, they can multiply and cause inflammation.
Normally, the dog’s body eliminates bacteria that reach the bladder. The risk of UTIs can be reduced by taking the dog out to urinate as often as possible, because the longer urine remains in the bladder, the greater the opportunity for bacteria to multiply. It is also important to ensure the dog always has access to clean, fresh water so that it drinks as much as possible. Frequent urination helps flush the urinary tract and physically carries bacteria out of the body.
An unbalanced diet can also be a predisposing factor for infections. For example, high dietary magnesium and phosphorus levels may increase susceptibility to infections and their secondary complications.
Supporting urinary tract wellbeing through diet
In dogs that are prone to infections, urinary tract wellbeing can be supported with a diet rich in polyphenols. Polyphenols can inhibit the attachment of the most common pathogen, E. coli, to the mucosal surfaces of the urinary tract. In research, it has been observed that cranberry pigments, tannins, and proanthocyanidins interfere with bacterial adhesion to the inner surface of the bladder. By reducing adhesion, they can help reduce the likelihood of infection.
In addition to cranberry, sea buckthorn and lingonberry are also rich sources of polyphenols. Studies have shown that cranberry can not only inhibit bacterial adhesion, but can also lower urine pH. In one study, researchers added cranberry extract to a bacterial culture and found that it affected bacterial membranes in a way that allowed antibiotics to penetrate more easily, making them more effective. In addition, cranberry extract disrupted bacterial function so that the bacteria no longer had the ability to destroy antibiotics.
Nettle can also be a useful addition for dogs with urinary tract concerns. Nettle increases urine output, which helps flush and cleanse the urinary tract. Nettle also contains significant amounts of vitamin C, which is itself a strong antioxidant. Vitamin C can also increase urine acidity, helping to suppress undesirable bacteria.
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HS.fi: Cranberry is recommended as preventive support for urinary tract infection
