From The Blog Of Vegans Guru, Dr. Greger
just a quick quote to all of you who dont wanna read this (understandably)-
" A study... found that a month on a gluten-free diet may hurt our gut flora and immune function, potentially setting those on gluten-free diets up for an overgrowth of harmful bacteria in their intestines. Why? Because the very components wheat sensitive people have problems with, like FODMAP and fructans, may act as prebiotics and feed our good bacteria."
probably the good doc is not aware that you can ingest LOTS of fodmaps without having any gluten