There is a horrible, twisted impulse that affects us humans from time to time, and urges us to sanitise everything, and unnecessarily make it ultra-safe, whether in terms of food or housing or anything else. While it is very occasionally beneficial, it is now a modern curse. We now have the Health and Safety Executive in the UK banning little boys from playing with conkers due to "safety" concerns, and schools routinely banning countryside activities for fear that they will get sued if a pupil has an accident, and so on. Then there's the EU with their draconian attempts to ban UK weights and measures and their recent banning of herbal-medicine products etc.
As regards the rawpalaeodiet, there is sometimes too much excessive worry by many newbies about raw animal foods, though perhaps understandable given the media-driven hysteria on the subject(heck, when I first started, I too thought I was going to die eventually from food-poisoning, and other foolishness).
So, we constantly hear about the mercury-in-fish myth despite long-term rawpalaeos cheerfully continuing to eat plenty of raw wildcaught seafood without any issues. Then there's the absurd Sally-Fallon-derived notion that we must always freeze raw meats for 14 days beforehand in order to get rid of parasites; another overhyped bit of fluff.
The other scare is the issue of pollution. The fact is that the extra load of toxins created by cooking is way more than anything that the meat/fish could get from air-pollution etc(it's only during incredibly rare occasions such as what happened at Minamata Bay, when people have to avoid the relevant food). Oil-contamination is not an issue as fishmongers routinely have to check their fish for any serious contamination, before sale.
There was one amiable ancient eccentric scientist who wrote a newsletter once which damned things like global warming. He pointed out that oil-spill scares only affected some wildlife, and that once the oil got broken down into basic chemicals, those chemicals then fuelled an explosion in wildlife numbers in later years as the creatures furthest down the food-chain started lapping up those chemicals. Not sure re the correctness of the claims, but it sounds interesting, at least.
That reminds me, given all the recent b*ll re rabies, and mythical charges of mass-murder aimed at me because of my championing of the wonder of "high-meat", and past rubbish by others re mythical dangers of mercury-in-fish, I think it is highly appropriate that I change my sig to the litany of the Bene Gesserit, (re Frank Herbert's book "Dune"):-
" I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain."
- Bene Gesserit Litany Against Fear(from Frank Herbert's book "Dune")