Dr. Fred Bisci who is a 40+ year raw foodist (vegan) has said that if you lived on a diet of NYC rats and romaine lettuce that you'd probably be better off than most average Americans as far as health problems. I'm sure its somewhat of an exaggeration, but a similar mindset does seem to penetrate alot of people and even thought there is some logic to it there probably is some holes as well.
before I say how I agree, let me just say how I disagree with these kinds of generalizations in that some known deficiencies are so ubiquitous - like Vit D - (which is of course.. a vitamin and not a mineral I suppose) and yet many of the people consuming the highest amounts here of raw FOOD BASED vitamin D are not remotely hitting this goal and more or less claim to feel fine or even good living this way for the time being. This is not the same as optimal health. Some people choose not to obsess over such things but that doesn't mean for others that such issues could not be fairly important for a particular condition or to feel well.
Basically we know for certain from looking at the RDAs and people eating complete garbage that its completely possible to have multiple deficiencies of absolutely key vitamins and minerals and still survive. Its also worth noting that people can indeed consume cooked and processed foods (vitamin pills) and increase their vitamins and minerals that way, correcting deficiencies. We also know that you can completely overdose on vitamins through pills, making the 'ineffectiveness' of pill based supplements to be pretty much the only one of AV's claims that makes no sense to me. Now whether these are all net harmful I do not know but obviously you can uptake minerals if need be from things which might have nothing to do with our natural diet.
The thing is - is that if the soil actually is in fact depleted of minerals. This is unarguable and this affects all the minerals that you eat. So in a way that would put us in the same position as vegans as requiring other minerals than what we would have eaten. Of course I don't believe people ate a vegan diet but on on paper its actually fairly easy to meet many (not all) of the RDAs with most vegetables and some fruits but even then these actually do not contain the minerals that are listed in many cases. All the other stuff like deep ocean fish, bivalves, seaweeds, and algae similar to green leafy vegetables and some fruits are similarly abundant in minerals that are not easily found in at least today's ruminant animals. Concentrated powders and juices and cooking can provide more nutrients but possibly more questionable absorption. One could argue that these minerals are not necessary for humans and can only be supplied by agrarian diets/supplementation and processing of some kind, HOWEVER, if one does have an actual deficiency of minerals these would be probably the obvious points to turn to to create a healthy balanced diet. Also things like mineral salts, clays and mineral waters which were already listed.
There is alot of truth that if you are not doing certain things and in a certain state of health that you will be able to uptake minerals from food easier and you should shed fewer of those minerals. Its been thought generally that high protein diets and an 'acid environment' are notorious for leeching calcium for instance, but there are some interesting rebuttals even in the research community as to that. Apparently in this article an all meat diet was used as a study (more than 80 years ago) that I was unfamiliar with.
rarely do I read whole studies but this one is pretty interesting:
http://www.ajcn.org/content/78/3/584S.fullThe whole blaming of the RDA as being artificially high is actually the claim the vegans and vegetarians make so they don't have to hit key vitamins and minerals which are really aren't very present in vegetation. There might be some truth to it with selling the need for pasteurized dairy and so forth but overall I wouldn't feel comfortable using that to dispel real world deficiencies as fabrications. If you know someone else that doesn't have a deficiency that eats a natural diet similar to you, this seems to be a fair assessment that your deficiency is not a fabrication by the US government. The other thing is that alot of people ARE NOT actually eating all that many organ meats, marine oils and other things high in most vitamins and minerals and also the more specific nutrients the WAPF for instance say like proper A, D3 and K2 etc...
Basically the very idea that one needs to get certain vitamins and minerals on a
daily basis seems to be a bit skewed there based on a natural paradigm, however I wouldn't be surprised if the values on average over the year are actually quite low, considering how abundant foods would have been in minerals prior to agriculture. Also in some cases traditional people did eat quite a bit of food, being very active which means more of the micronutrients.