There is a thing where one gets a natural detox after switching to raw, palaeo foods. This is normal,as the body starts getting rid of the cooking-derived toxins built up after decades of eating cooked, processed foods. This is temporary. Admittedly, those who are very terminally-ill from eating cooked foods should be very careful to start slowly with rawpalaeo foods, but that's all. Parasites are not an issue in the developed world, as almost all farmers, even organic ones, use deworming medicines etc. against parasites. Even if one does, there are many anti-parasite medicines which work easily over a couple of days to remove any parasites. Most parasites are species-specific so die in other species, anyway.And even human-oriented parasites are designed, mostly, to allow their host to live with few complications - a failed parasite is one which kills its host.