Does sitting a lot make hemorrhoids worse? I've had them for 2 yrs and they periodically act up/bleed. I sit a lot during the day. How to improve them

Hemorrhoid veins. You may be able to avoid irritating the hemorrhoids. Drink plenty of liquids, eat high fiber foods like fruits & vegetables, take fiber supplements like metamucil, avoid constipation and straining or sitting too long at the toilet. Suppositories may relieve a little. See a surgeon for possible hemorrhoid banding procedure if persistent problems.