I'll just throw in a word for the GAPS (Gut and Psychology Syndrome) diet here too. It's whole foods, starch free, designed for gut healing (with probiotics and broths). Very like a std Paleo diet, except no sweet potatoes or others starches, but can have navy beans and some dairy (conditions apply).

It's also very good for autoimmune issues and aspergers / autism / ADD etc. Although many people do it LCHF, it doesn't need to be.

As you, me and @triddin have all said and will no doubt keep saying - there are a variety of slightly different therapeutic diets, but the basis of them all is real food. And most of the best also limit the carbs. Each person just needs to find their own best variant.

For anyone who wants to read more about GAPS, here are my previous articles:
• About the Gut & Psychology syndrome (GAPS) diet Part 1 – Can it help autism?
• GAPS diet Part 2: Foods we can’t have
• GAPS diet Part 3: Foods we CAN have
• GAPS diet Part 4: What if I can’t eat some animal foods