Hello, Thanks for your query. Drinking coffee has no effect on the severity of piles symptoms. Coffee does not cause or irritate hemorrhoids because it does not typically cause constipation or diarrhea, both of which may lead to hemorrhoids if they are chronic. Sitting down excessively, which puts pressure on the anal area, sitting on the toilet for long periods and straining to have a bowel movement are all common hemorrhoid causes. You do not have to stop drinking coffee to prevent hemorrhoids, but make sure you are also drinking at least eight glasses of water a day. I do hope that you have found something helpful and I will be glad to answer any further query. Take care