Defecation is the natural and essential process of having a bowel movement. It is the body’s way of getting rid of waste material. Sometimes, there may be complications with the defecation reflex.

DNA variations tied to vitamin B1 processing help explain why higher thiamine intake is linked to more frequent bowel movements in many people.

IBS is a chronic gut disorder with discomfort and bowel changes, but no visible damage. IBS is categorized by bowel habits: constipation (IBS-C), diarrhea (IBS-D), mixed (IBS-M), and post-infectious.