Learn, understand, then decide whether you accept or reject.
If you're germophobic, this is a book you might want to skip. It explains the origins of microbes and how they spread, along with their evolutionary threats and potential epidemics. Terrifying, but I couldn't put it down.
I recommend you listen to Tom Standage's books if you're into the history of food and drink. This helps paint a better picture by explaining the relation between humans and the aquatic world.
The Omnivore's dilemma follows the author's journey through the food chain from the farms that feed the livestock that is processed to feed us. It then goes on to explain what organic food really means, and what it takes to be a smarter eater.
In his quest for the "perfect meal", he goes everywhere from industrial farms to hunter gatherer trips to local ranches. What he learns along the way is eye opening.