At this point, interstitial cystitis is not preventable.
There is no evidence that interstitial cystitis leads to more dangerous conditions such as cancer. However, it does have a negative affect on quality of life. The extent of the problem varies from person to person. Some people have only one or two very bad episodes in a lifetime. For others, symptoms are much worse. Most of the time, symptoms come and go.
Interstitial cystitis is not contagious and poses no risk to others.