Although certain points in this article may not apply to those following ICAMA protocol, this is an outstanding article. 

http://articles.mercola.com/sites/articles/archive/2015/03/30/fiber-fermentation-gut-health.aspx?e_cid=20150330Z2_DNL_NB_art_1&utm_source=dnl&utm_medium=email&utm_content=art1&utm_campaign=20150330Z2_DNL_NB&et_cid=DM72746&et_rid=895084019

Dr.M