TARNIP-
Did you jump right to that 70% fat from your previous diet, or did you work up to that level slowly? If the former, that may have been your problem. There's no way that I can add significant fat without 'symptoms' very similar to yours.
Ouch.
This doesn't come from personal experience, nor yet Stabby-level knowledge of anything, but fwiw I imagine you could eat a more 'Kitavan' variant of Primal - plenty of starchy tubers to ensure you get enough calories (or white rice, even), lots of veggies, and meat and fish just with their naturally-occurring fats. It's not actually compulsory to snack on slices of butter. Different people do better on different proportions of the basic Primal foods.
Also... granted that if you jump straight to a high fat diet horrible things happen. Maybe if you move very, very slowly towards more fat you'll find you adapt.
TARNIP-
Did you jump right to that 70% fat from your previous diet, or did you work up to that level slowly? If the former, that may have been your problem. There's no way that I can add significant fat without 'symptoms' very similar to yours.
Chicory root can be very high in fructose. :-(
I think it's totally a fad diet. It's not just high protein, low carb, low fat... it's also low calorie. It's a fad diet in the sense that it is marketed as a way to achieve rapid fat loss. Definitely not focused on health wholistically speaking.
Once you deviate from the plan, the likelihood of regaining weight is high, based on what I've read of people who have been on it. I would not be happy eating lean protein and plain fat-free veg for weeks on end. I like fat![]()