Food We Eat Might Control Our Genes

AdrienneinTO

http://www.scientificamerican.com/article.cfm?id=vitamins-minerals-and-microrna

helenium

Fairly shocking that the RNA isn't degraded in the digestion if this is true.
Is it present at a high enough concentration to elicit changes in human cells? Article doesn't make it clear!
It sounds plausible, but I'd be concerned about how it's feasibly possible to eat RNAs and keep them intact all the way to the bloodstream (not even breaking them down to get across the intestinal wall)

Could these microRNAs be being produced by the body instead? (Haven't read the original article though so I can't debate much)