Hard, dry stools are the result of the colon absorbing too much water. Normally, as food moves through the colon (also known as the large intestine) the colon absorbs water while forming stool (waste products). Muscle contractions then push the stool toward the rectum, and, by the time the stool reaches the rectum, most of the water has been absorbed, making the stool solid.
When the colon's muscle contractions are slow or sluggish, the stool moves through the colon too slowly, resulting in too much water being absorbed. Some of the most common causes of constipation include the following:
Medications
Lack of exercise
Not enough liquids
Not enough fiber in the diet
Irritable bowel syndrome
Ignoring the urge to have a bowel movement
Changes in habits or lifestyle, such as travel, pregnancy, and old age
Problems with intestinal function
Abuse of laxatives
Next Steps
Since you have tried everything else it is time to undergo certain investigations to determine the cause after which we can decide the line of treatment.
Health Tips
Do not strain as it may cause haemorrhoids, fissure,rectal bleeding or rectal prolapse.