Hi IBS or irritable bowl syndrome is a trait of intestines where they respond to stress in an exaggerated manner. It is a psycho somatic illness. There is no identifiable cause . Just like some people are aggressive, others shy , some others interovert - these are just character traits. Similarly intestines respond to anxiety and depresion. Some times its motility is reduced ,resulting in constipation . Other times, it is increased ,resulting in frequent passing of stools. So the best would be to adopt healthy life style, develop anger management skills, and better communication methods. Relaxation exercises, morning walk and taking diet rich in roughage helps TAKE CARE DR SAATIISH JHUNTRRAA