After several years with an anal fissure and using uselessly
many ointments, pills and supplements, etc, I got a total cure thanks to two things: two surgeries (I believe that in very advanced stages of anal fissure, surgery is essential) and in order to avoid recurrence, an adherence to a 100% carnivorous diet. Two years after the last surgery, I am totally healed. The carnivore diet (predominantly meat, eggs and dairy) prevents episodes of either constipation or diarrhea; the stools are always small and soft. For the past two years I haven't eaten any fiber-containing foods.