No beets, coconut or yogurt. No gluten, no dairy, no sugar, and no nightshades. Look up Radical Metabolism book by Anne Louise Gittleman. Worth every penny in my opinion. Information is straight forward.
Thanks for this pointer, Cutiegirl! Also see her youtube interviews.
I'd never heard of her, but she seems to have been around for quite a time.
Positive recommendations from the well-known functional docs Mark Hyman and Jacob Teitelbaum. Hyman is head of Cleveland Clinic's functional dept (didn't know they had one!) and says he traced his CFS back to heavy metal toxicity.
Wikipedia slags her off for "fad diets" and that her PhD comes from a diploma mill, caustic even considering its generally anti-functional agenda.
Nothing surprising about the foods named tho...:
How do you mean these foods: Are they ones only you avoid or ones she recommends everyone to?
Agreed, all of the foods mentioned can be a problem for some people, even mainstream docs acknowledge that. However only sugar is a problem for everyone, I'd think. There's loads more foods I don't tolerate, but yogurt (plant or dairy?), dairy and some nightshades do seem OK for me, just I prefer to avoid dairy, and need to avoid beets & coconut and reduce gluten. I'm not in a position to reduce anything I tolerate just cos one nutritionist generally recommends to do so, if that's what you mean?
But ironically a chance finding in a blood test a few weeks ago has now shown my phosphates are minimal, altho vital for energy (AT
P)!! And since phosphate supps are laxative, I'd do best to fill my phosphorus up with .... dairy, especially yogurt...
. As I want to keep away from eating animals themselves (as well as processed foods
). My nuts, pumpkin seeds, chocolate & veggies aren't doing enough yet, the only thing there I can try to increase is beans and nuts, but have to beware of increasing my histamine.
Who'd've thought: healthy diets try to avoid omnipresent phosphate additives in food and I may have lost energy due to "malnutrition" from avoiding my IBS and MCAS/histamine triggers....! Catch 22.
. Unexpectedly my husband started a beet regimen so we capsule powder. Even more unexpectedly we found a juice that's not so bad. It's quite interesting how, no matter the juice recipe, the beets still find a way to make sure you taste em 
, bok choy in the US = pak choi / choy in the UK and here.
So good that you've found a home base for your elimination diet, that's also a godsend. 
Just that it's all very personal: I only tolerate 30% of that bone broth... Of the many ways of doing an elimination diet, several might theoretically be right for us, but it has to click in our head, so we get it and are motivated to follow thru. Same with all our self-care, getting ahead, implementing new habits quickly etc...