So claims this article from the Washington Post, noting that GMOs are so much more efficient in producing crops given resources (i.e. greatest production from lowest resource cost) that avoiding them under the guise of protecting health or the environment is completely wrong-headed. While the first is true- there has never been any solid work linking GMOs to health harms- the environmental issues are a little more complex. For example, Roundup Ready soybeans may be cheap to produce, but they also lead to increased application of herbicides. That may be better than the alternative, but it's not an open-and-shut case.
Anyway, take a look at the brief Post article. It's a strongly made case.