I'm thinking about all the supermarket meats out there that are labelled "all-natural," and all the signs that say "Local!" but then don't tell you what is and what isn't, and that Local! can mean Argentina, relative to, say, Vietnam.
Advertisements are plentiful for all kinds of products and supplements that purport to improve longevity or fend off disease. What may be harder to find, however, are ways you can influence these yourself.