What are some tips to prevent anal fissures?

The general tips are to drink lots of water, around 1 gallon per day, eat a proper diet full of fruits and vegetables and fiber, and get exercise and try not to lay down after you eat. There are also medications that may help, or medications that you are on may be causing digestive issues, so make sure that any new medicines aren't causing issues. And as always Prune Juice can be helpful!