Well, I'm going to try pemmican in a couple of months or so. More just to confirm others' negative experiences re pemmican. Obviously, there's no way I'm going to waste time preparing my own pemmican as one of the benefits of being raw is not spending time preparing/cooking food,
so I'm going to have to buy it from some UK source. And I can't do a pemmican-only diet as zero-carb, raw or otherwise, is extremely harmful to my health. So, I'll just eat pemmican and some berries for a week or more. If I start getting heart-palpitations etc.
(a common reaction on my part to cooked tallow I won't be surprised).
I wish you good luck with that experiment, but:
The failed ww2 Canadian army experiment with pemmican resulted in such lethargy that it was stopped in only two weeks. Symptoms like that are expected. Such a great change in the way a human body works seems to require heroic persistence for some time.
There is good evidence that heart palpitations are caused mostly by mineral deficiency(
www.afibbers.org), and for me the palpitations were cured IMO by the bio-available minerals in raw grass-finshed beef.
It is a mystery as to why anyone could get palpitations with adequate minerals, the only guess I can make is that they ate something that contained a nutrient blocker. Unless they confused palpitations, which is a strong arrhythmia, with tachycardia which is a strong rapid heartbeat. I still notice a faster heartbeat sometimes, and it's always been harmless.
I would not trust anyone to make my pemmican ( except maybe someone who feeds the same stuff to his children);
it's like Rubik's cube, in that while there are a lot of ways to make it right, there are even more ways to make it wrong.
Jessica has a good point, and it might be why wild unwashed blueberries were OK, but I tried mature rose hips picked from the bush and they gave me diarrhea.