GMO's
A WebMD doctor's review of the literature shows that the safety of GMO's is unknown and there are reasons to be apprehensive.
For the record: on this issue, as in many others, proof is unnecessary for action. The point of the article is that it is reasonable to doubt the safety of all GM food. I happen to know that WebMD is extremely careful to only make medically defensible claims in their articles, because this is crucial to the market value of the WebMD brand. So until I learn more and otherwise, I'd rather play it safe, within a margin of practicality (affordability), especially with the developing bodies of my children.
For the record: on this issue, as in many others, proof is unnecessary for action. The point of the article is that it is reasonable to doubt the safety of all GM food. I happen to know that WebMD is extremely careful to only make medically defensible claims in their articles, because this is crucial to the market value of the WebMD brand. So until I learn more and otherwise, I'd rather play it safe, within a margin of practicality (affordability), especially with the developing bodies of my children.

