Excessive pressure on the veins in the pelvic and rectal area causes hemorrhoids. These veins tend to stretch under pressure and may bulge or swell.
Some of the factors that can figure as causes of Piles include:
- Excessive straining during bowel movements
- Eating a diet that is low in fiber
- Chronic diarrhea or constipation
- Anal intercourse: The lining of the anus and rectum is delicate and tears easily due to force and friction of anal intercourse. Repeated injury and pressure on the veins lead to formation of hemorrhoids. This is one of the principal causes of Piles.
- Sitting for long periods of time: Sedentary jobs that require long hours of sitting also increase the risk for formation of hemorrhoids
- Obesity: Obesity causes increased pressure in the pelvic region making the person susceptible to hemorrhoids.
- Pregnancy: Pressure of the growing fetus narrows the rectum and anal canal leading to straining and figures in the causes of Piles. Application of force during labor makes the hemorrhoids worse
- Old age: As a person ages the tissues that support the veins in the rectum and anus become weak and stretch leading to hemorrhoids.