If Whole Foods (often) are a waste of money, they aren't actively dangerous (well, except to your wallet).
Laugh if you will, at people's gullibility, and then read up on the Radithor patent medicine (see https://en.wikipedia.org/wiki/... ).
Of course it's well known that the food industry isn't worried about health effects of what it sells. They're happy to simply put in whatever ingredients make a product sell. Just look at all the stuff that contains sugar (often disguised as "corn syrup" to avoid having to print the word "sugar" on the label).
And "naturally risen" meat isn't all bull either (pardon the pun). It's because standard commercial beef is quite likely to contain antibiotics (see e.g. http://www.pbs.org/wgbh/pages/... ). The reason is of course that feeding animals antibiotics raises production, so it's cost-effective.
It's also grossly irresponsible and really should be banned on the spot. Why? Serving up diluted amounts of antibiotics ensures (through natural selection) that those bacteria that survive the initial onslaught are immune to those same antibiotics. And where do those bacteria and residual antibiotics end up? Well ... in animal poop and from there in surface waters, sewers and oceans. And via the slaughterhouse (if they're a teensy bit careless about separating out intestines in the thousands of carcasses they process each day) in your steak.
Given that those dirty little critters actually exchange pieces of DNA, it's easy to see how whole families of bacteria that live in sewers, surface waters and seas can gain resistance to antibiotics. Which is why we're now facing a crisis with perfectly ordinary bacteria being hard to treat when they cause an infection (just Google for MRSA). Or being even being impossible to treat, so that people with a weak immune system (elderly, post-surgery patients) die from infections that had stopped being a threat when antibiotics were discovered some 70 years ago.
Of course the industry resists. They're not responsible for public health or MRSA, they're responsible for their own bottom line (see e.g. http://www.usatoday.com/story/... ). Which is why the FDA is embarking on a campaign of voluntary reductions.
Reading labels (if you can be bothered) gives you a lot of information you need to make sensible choices in what you eat. That's why we have food labeling regulations (which incidentally are severely criticised by some libertarians as "undue interference with the markets").
Even then there's little defence against people who seek solace in bogus science. But it's better to light a candle ... etc. One very interesting site I have found that debunks various "power" food additives is this one ( http://www.ergo-log.com/ ). They genuinely impressed me by truthfully and insightfully reporting on scientific publications concerning food supplements. They know their stuff, both from a (bio)chemical point of view and from a statistical (and experimental design) point of view. Not a light read, but Recommended.