I agree that meat can be quite the clogger, especially when consumed in quantities - and today's adulterated feedlot meats are unhealthy period. While I am convinced that mostly raw, mostly vegan is the best for overall health regardless of the conditions being addressed, I would caution that completely raw vegan is a rather difficult way to go that must be managed carefully. I also note that, not only has man developed as a ominivore for eons and is thus adapted best for that kind of diet, but also the longest lived peoples on earth do include at least some healthy meats in their diets.
BTW, I looked and could not find the "Wigmore" post you referred to. Could you help by providing a link?