I was just thinking about this. Not to tempt fate, but for me it seems to manifest in almost never getting sick *knocks on wood*. I've been eating more or less TF (I'm not strict if I occasionally crave junk food, but the majority of my food is homemade and TF) for about 8ish months now and I haven't been sick at all since July (I used to get at least a cold several times a year), and that sickness was caused by a very obvious non-TF thing (ahem, getting wildly drunk with a girlfriend and walking home while eating fried grill food and a jar of nutella in cold windy weather at 5 AM...

). I also have lots of energy and am not depressed (last year at this time I was very depressed - and surprise (not) I was also not eating well and very run down). Oh, and I can eat whatever I want (including occasional crap

) and not gain any weight. So I didn't have any major disorders to fix, but overall I feel much more vital and energized than I ever have even when eating a mostly whole foods but not TF diet. For me going TF has meant starting to use bone broth, eating mostly sourdough/soaked whole grains, including quality meat or eggs in my diet every day, cutting out all "vegetable" fat and refined sugar (I had already mostly done this), eating ferments regularly, drinking only raw milk when I do drink it, starting to include liver in my diet, and being as seasonal as possible in my food selections.