I don't quite understand the logic of "natural" being "good for you" and "not-natural" being "bad for you". For example, the glasses sitting on my nose are not natural, yet without them I wouldn't be able to see too well. And the sanitation and water supply systems are an improvement to what was there otherwise (i.e., people dumping their chamber pots into the street). And yet, if I stumble across a copperhead snake, I'm going to avoid it even though it is natural. And don't forget that tobacco is natural.