Respected user , hi
Thanks for using Healthcaremagic.com
I have evaluated your query thoroughly .
*  There are various reasons  which may play a role for your condition as 
  -  Motility issues as diabetic 
gastroparesis or others
  -  Enzyme deficiency from various conditions of liver , 
gall bladder , 
     pancreas
  -  Inflammatory bowel diseases 
  -  Narrowing of intestinal lumen , tumors , 
Tuberculosis   -  General condition related as obesity , hyper cholesterolemia , chronic     
smoking induced , sedentary life style 
*  Need thorough history , physical examination , necessary tests of lab    
Ultrasound report and scopy in selected cases .
Hope this will help you .
Always welcome for any further guidance .
Regards .