Fred Hornaday of bambatu is the man on the bamboo scene. Below is the link to a detailed article that will be welcome news to folks who do not want to see gluten on the menu.
https://bambubatu.com/bamboo-flour-going-against-the-grain/
Hornaday is excellent at championing bamboo while at the same time providing the whole picture.
Check out his post and try bamboo flour.