Hemorrhoids are a type of varicose vein that tends to occur as we get older; about 75 percent of Americans have hemorrhoids at some point. Being constipated or passing large, hard stools may contribute to developing hemorrhoids. In many cases, however, there is no obvious cause. In addition to age and constipation, other contributing factors include the following:
* Some medical conditions (like cirrhosis â end stage liver disease)
* Pregnancy
* Sitting for a long period of time (especially sitting on the toilet)
* Obesity
* Chronic diarrhea
* Diet low in fiber or fluids
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