Bidets are more hygienic than toilet paper. A study found that using a bidet properly can lower the amount of bacteria in the urine, indicating a more thorough cleaning. Using soap and water to clean yourself after going to the bathroom is more hygienic than simply cleaning it with paper. When you use a bidet, your hands don't usually come into close contact with stool.
This could limit particles from reaching your hands and spreading. Using a bidet with medium-low water pressure could help relieve pressure in the anus and, therefore, reduce the risk of hemorrhoids. In addition to the superior cleanliness obtained by using a bidet, health problems in the gastrointestinal and urinary tract can also be addressed. For example, a bidet can help treat constipation, a problem that almost everyone has to deal with from time to time.
Pressure from a bidet can relax and stimulate the sphincter muscles, making it easier to defecate. Stress caused by constipation can lead to other health problems, such as anal fissures and rectal prolapse, so it's helpful to treat constipation before it becomes a major problem. Bidets may be able to help alleviate other medical problems, such as anal fissures, hemorrhoids, or constipation, but again, there isn't much data to support it. A small study found that using a bidet can lower “anorectal pressure.” Twenty participants had catheters inserted into the bottom and spent a minute using the bidet, at different water pressures.
The pressures that their rectum exerted on the catheter were lower when they used the bidet than when they did not. In turn, lower anorectal pressure could be beneficial in treating medical problems, says Dr. Swartzberg; although it is important to remember that the effects of bidets on these problems have not been directly studied. In addition, there is at least one report suggesting that a bidet could have been the cause of an anal fissure.