Cure constipation, and you will prevent hemorrhoids.
You should not use any force when on a toilet. If you do, you are constipated.
You should empty your colon about 2 x a day.
Eliminate bread and all flour products from your diet.
Eliminate pasteurized and homogenized milk and all low fat milk products, especially all cheese.
Learn how to cure constipation by changing your diet.
Write diet log, and log everything you eat.
Whatever gives you constipation, eliminate for 3 months.