FILE - This March 16, 2011, file photo shows organic radishes at 

FILE - This March 16, 2011, file photo shows organic radishes at the Pacifica Farmers Market in Pacifica, Calif. Patient after patient asked: Is eating organic food, which costs more, really better for me? Unsure, Stanford University doctors dug through reams of research to find out _ and concluded there's little evidence that going organic is much healthier, citing only a few differences involving pesticides and antibiotics. Eating organic fruits and vegetables can lower exposure to pesticides, including for children _ but the amount measured from conventionally grown produce was within safety limits, the researchers reported Monday, Sept. 3, 2012. (AP Photo, File)
Associated Press
FILE - This March 16, 2011, file photo shows organic radishes at the Pacifica Farmers Market in Pacifica, Calif. Patient after patient asked: Is eating organic food, which costs more, really better for me? Unsure, Stanford University doctors dug through reams of research to find out _ and concluded there's little evidence that going organic is much healthier, citing only a few differences involving pesticides and antibiotics. Eating organic fruits and vegetables can lower exposure to pesticides, including for children _ but the amount measured from conventionally grown produce was within safety limits, the researchers reported Monday, Sept. 3, 2012. (AP Photo, File)
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