Cystitis is usually caused by an increase or imbalance of bacteria in the urinary tract, but there are a number of reasons why this change might occur. Women's health advisor Emma Thornton explains a number of these causes.
Cystitis is usually caused by bacteria infecting the bladder, the most common being Escherichia coli. E.coli is found in small quantities in the digestive tract, and has an important role in the absorption of nutrients. However, if it finds its way into the urinary tract, it can result in the unpleasant symptoms associated with cystitis. There are several reasons why this may occur, and certain types of people are more prone to bladder infections than others.
Perhaps the most common or easiest way to develop cystitis is the transfer of bacteria into the bladder, often from the back passage. As a result, women are more susceptible to cystitis as anatomically, their anus is situated much closer to the urethra than in men, making it easier for the bacteria to reach the bladder. Additionally, a woman’s urethra is much shorter than a man’s so that the bacteria have a shorter distance to travel to the bladder.
In a similar way, insertion of urinary catheters, tampons or contraceptive diaphragms can all provide an easy pathway for bacteria to enter the bladder, increasing the risk of developing cystitis.
Urine retention is another leading cause of bladder infections, as the bacteria is not removed with the urine. Stagnant urine is a breeding ground for bacteria, so it is important to be able to drain the bladder fully. Constipation can increase pressure on the urethral tube, blocking the flow of urine out of the bladder.
Urine retention is very common amongst men who have an enlarged prostate. The prostate gland is situated around the neck of the bladder, so any swelling of the gland increases pressure on the bladder and, in a similar way to constipation, can prevent the bladder from fully emptying.
It is important to understand if urine retention is the cause of your cystitis as, until the bladder is effectively draining, it will be difficult to clear up the infection.
As with the digestive system, the urinary tract contains a careful balance of bacteria, which is essential to keep it healthy. However, when one type of bacteria begins to take precedence over another, this can result in cystitis.
This can occur if using strong chemicals, such as in perfumed soap and bubble bath, as these can kill off good bacteria. If you are prone to urinary tract infections, consider using soaps which are natural and will not affect your bacterial balance.
Additionally, menopausal women are particularly prone to developing cystitis. Fluctuating hormones at this time of life can affect the bacterial balance throughout the body, including in the urinary tract. The tissue and skin in the urinary tract becomes weaker and thinner at this time too, meaning that it is more easily injured or traumatised, making infection easier to establish. It becomes less resilient and may struggle more to keep infection at bay.
Certain medical conditions can increase susceptibility to developing cystitis. For example, diabetics tend to have elevated levels of sugar in the urine, and bacteria thrive in that type of environment. It means that if the bacteria enter the bladder, they will be able to multiply more quickly and abundantly than in a non-diabetic. This means that even a very mild infection can quickly become more problematic. If you are diabetic and suspect a urinary infection, this should be checked by a doctor.
Although in most cases of cystitis bacteria is at the root of the cause, in interstitial cystitis this isn’t the case. Damage, structural changes, allergic responses or stress may all be potential underlying factors.
Hormones – Changing hormones at certain stages of a woman’s life may make here more susceptible to infection. Some examples include:
At times different times throughout the monthly cycle. Cystitis may be more likely to pop up around the time of a woman’s period, for example.
During the use of hormonal contraceptives
Sex – Although sex doesn’t directly cause cystitis, irritation, damage or the transfer of bacteria can occur as the result of sex which can contribute to cystitis.
Chemical cystitis – Different medications, chemicals found in cosmetic and personal hygiene products, or synthetic materials in clothes may damage or irritate of the lining of the urinary tract which may contribute to cystitis
Hello my name is Emma and I am a qualified nutritionist. My areas of interest include female health and weight management.
I have a passion for healthy living and a holistic approach to health. I enjoy writing for the A. Vogel website, translating my knowledge into informative pages.
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Cystitis is sometimes known as ‘honeymoon cystitis’. Why? Well, during sex, bacteria can spread from the perineum to the urethral opening. The risk of developing cystitis is therefore increased depending on the frequency you have intercourse (sorry honeymooners!).