But plenty of skeptics remain. "Such small changes are unlikely to represent any nutritional or health benefit," writes Ian Givens, a professor of nutrition at the University of Reading. In a statement on the new findings, Givens points out that switching from conventional milk to organic milk would increase omega-3 intake by only very small margins.
And an analysis by researchers at Stanford University published several years ago concluded there was no good evidence that organic fruits and vegetables were more nutritious overall.
There are echoes of this finding in the newer meta-analysis studies. Although organic crops had higher levels of antioxidants, they did not consistently contain higher levels of vitamins. For instance, as we've reported, vitamin E levels didn't vary much between organic and conventional crops. And protein levels were lower in organic crops such as wheat.