Organically grown veg does not have higher levels of healthy antioxidants than conventional produce, claim Danish researchers.

Researchers at the National Food Institute at the Technical University of Denmark in Soborg analysed polyphenols from onions, carrots and potatoes grown using organic growing techniques, and those from veg grown with chemical fertilisers and pesticides. The researchers concluded there was no difference in polyphenol content between conventional and organic veg.

There were other reasons to pay a premium for organic produce, such as environmental protection, better taste, no exposure to chemical fertilisers and pesticides and other possible health benefits, the researchers said. However, they added: "The health benefits of organic food consumption are still controversial and not considered scientifically well documented."