Organic food has no nutritional or health benefits over ordinary food, says a major study published in the American Journal of Clinical Nutrition.

Researchers from the London School of Hygiene & Tropical Medicine said consumers were paying higher prices for organic food because of its perceived health benefits. But research commissioned by the British government's Food Standards Agency and consisting of a systematic review of 162 scientific papers published over the last 50 years found no significant difference between organic and conventionally raised food.

“Our review indicates that there is currently no evidence to support the selection of organically over conventionally produced foods on the basis of nutritional superiority,” said Alan Dangour, one of the report's authors.