One of the first things I hear going through people's (by people I usually mean doctors and traditionally trained mainstream dieticians) minds when I tell them we are grain free is "gasp, that must be so unhealthy, cutting out AN ENTIRE FOOD GROUP"

Firstly, lets get one thing completely clear.  Going grain free is NOT a low carb eating plan.  Don't listen to ignorant people who assume that cutting out grains is "completely cutting out a food group and isn't that really dangerous and doesn't it mean that you are going to be malnourished because you don't eat bread or rice and pasta?"

Well, to see where this idea comes from, lets take a look at the typical modern day food pyramid:

Grain-Free is the elimination of all grains including wheat,  rice, corn, millet, barley and oats.   A grain-free diet has been proven through the personal experience of hundreds of people worldwide who have experienced significant relief from symptoms of crohn's disease (and many other illnesses of the digestive system) and also for chronic fatigue. Main-stream medicine disputes this due to the fact  that the so-called evidence is anecdotal in nature, and cannot be backed up or substantiated by clinical trials or studies.  They will tell you that there is no evidence that diet can play such a pivotal role.

Quinoa, amaranth and buckwheat are technically not grains and so (technically) they are allowed.  However according to the SCD these are still not permitted.  I feel that whether you would have these or not would depend on your own personal experience of these non-grains and whether you felt you could tolerate them or not.   Everyone is different.