Navel changes to diet and exercise, unexpected change in shape may be the result of ascites. In addition to change in shape being a possible side effect from ascites and umbilical hernias, the navel can be involved in umbilical sinus or fistula, which in rare cases can lead to menstrual or fecal discharge from the navel. Menstrual discharge from the umbilicus is a rare disorder associated with umbilical endometriosis. To minimize scarring, the navel is a recommended site of incision for various surgeries, including transgastric appendicectomy, gall bladder surgery, and the umbilicoplasty procedure itself. Abdominal thrusts is a first aid method
Cultural views on the navel country singer Shania Twain appeared in low jeans baring her midriff and navel in her music videos and performances. It became both the most widely discussed body part in country music and her trademark. Shania once commented, "Someone said to me once, 'Well, if I had your belly-button I'd sell 8 million albums too.' But it takes a lot more than a belly-button to sell more than 8 million albums." Jennifer Lopez is believed to have started the trend of exposing the navel on stage and red carpets. It has been said Christina Aguilera has the most recognizable belly button