Not much has changed here - specific gastric events attract little comment.
Basically any event which radically stresses or changes or biases the bacterial and floral make-up of the bowel and the intestines can cause looser motions...
Fruit contains sugars which attract/retain water and therefore more liquid waste - this is the process we use to actually cause looseness - we ingest salt or salts (epsom salts) as these absorb water become heavy and loosen the bowel.
Change in diet can cause diarrhoea - so can mental changes.
If you do get a bit of a cleanout, sometimes it may be good to go with it and fast a while to help the cleansing process - just drinking water for a while with no food.
