garylouseville said...
In a way, yes, there is evidence that taking oral mesalamines can prevent ulcerative colitis. It's actually common sense.
Common sense is not evidence; it doesn't even make it to circumstantial evidence, let alone anything stronger. Science doesn't use common sense as its guide when trying to find out how the universe works.
gary said...
For example, let's say that a person has left sided or pancolitis or whatever. Let's also say that that person is one of the lucky ones and goes into a clinical remission by just taking oral mesalamines. Clinical remission would mean that there is no visible sign of colon inflammation in the colon anymore. Do the doctors tell you to stop taking the oral mesalamine? No. Just the opposite. They may back it down to a maintenance dose from a full dose but they still want you to take it forever, even if you have no visible colon inflammation. Why? Because they know that by taking it even with no visible inflammation that it will hopefully help keep the patient's UC at bay and prevent further flaring.
That's because there's actual evidence that taking maintenance medication delays the length of time to the next flare-up.
On the other hand, there's no evidence that taking maintenance medication for an area which has never previously been inflamed prevents inflammation from subsequently appearing in that area. It might do. There's just no evidence that it does.