In modern times, most people are sitting in the wrong way in the toilet. The human body is designed to eliminate feces squatting while bending the legs toward the chest. This posture relaxes certain muscles in the rectum which acts as a valve to allow the feces to pass through. However, sitting upright tightens this “valve” making elimination harder to do.
To eliminate in this position require the person to press his belly hard. This is called “Valsalva maneuver” and increases the blood pressure in the body by two to four times. (This can cause a heart attack in some people and damage to blood vessels. Most cardiovascular awards give laxatives to their inmates to prevent it).
This pressure can create pouches in weak places in the intestines – causing the “Diverticulosis” illness.
The pressure can cause other gastro damages too. Semi-digested food can rise from the colon to the small intestine. Which can contribute to Crohn’s syndrome. This pressure can create hemorrhoids, damages to the liver and other internal organs.
The best way to prevent this from happening is to go back and defecating as nature intended. Just buy yourself a toilet stool and make it easier for your body.