Causes of Constipation
In most cases where the stool is hard, constipation is due to dryness of mucus membranes. Should that happen, usually the mouth also becomes dry with increased thirst. Like frequency of bowel movement, causes also vary from person to person. One factor that makes a person constipated may not have similar effect of the other. Common causes are:
* Frequent use of spicy food
* Excessive use of foodstuff that tends to create dryness of mucus membranes
* Insufficient fluid intake
* Pregnancy (not everyone is affected)
* Reduced physical activity
* Continuous bed rest due to sickness
* Intestinal obstruction
* Medication for certain diseases
* Over use of laxatives
* Aging (in some persons)
* Traveling
* Habitual delay in attending the call to bowel movement
* Use of narcotics (including smoking)
Source:
http://www.homeopathy.com.pk