Food Politics » GM Myths and Truths: A critical review of the science.
The post links to a heavily referenced scientific review of the claims for benefits of GM foods. The list of failures is so impressive, I’m going to repeat it here:
“On the basis of this research, they argue that a large body of scientific and other authoritative evidence demonstrates that most claims for benefits of GM foods are not true. On the contrary, they say, the evidence presented in their report indicates that GM crops:
Are laboratory-made, using technology that is totally different from natural breeding methods, and pose different risks from non-GM crops
Can be toxic, allergenic or less nutritious than their natural counterparts
Are not adequately regulated to ensure safety
Do not increase yield potential
Do not reduce pesticide use but increase it
Create serious problems for farmers, including herbicide-tolerant “superweeds”, compromised soil quality, and increased disease susceptibility in crops
Have mixed economic effects
Harm soil quality, disrupt ecosystems, and reduce biodiversity
Do not offer effective solutions to climate change
Are as energy-hungry as any other chemically-farmed crops
Cannot solve the problem of world hunger but distract from its real causes – poverty, lack of access to food and, increasingly, lack of access to land to grow it on.”
Marlene Dotterer 
I can only say that I think it’s interesting a lot of the century old folks don’t claim they got to that age by completely avoiding meat or removing all fried foods from their diet. I applaud those that do though. But I remember hearing about eating fresh foods, whole foods grown at home or eggs from chickens down the road at the Farmers Market. People ate to feed, not just to eat something unnecessary. But things have changed quite a bit.
The key finding for me is the lack of regulation. I think the scientists who are looking to increase food production have good intentions, and I trust that they have good skills. I don’t trust the businesses that get hold of the results – and then flood the marketplace with the products that bring the highest profits.