Not sure if this is the appropriate thread to post this in, but I'm subbed into this thread and it popped up into my radar... so here is where I'll post it....
I've been grain free for 5 months now - following the GAPS diet for health issues... and I've noticed that my teeth are MUCH whiter than they used to be (I drink copious amounts of coffee
)... I googled it and found this to be a common theme among those who are grain-free... just throwing this bit of information out there...