By Eric Nagourney, New York Times, July 17, 2007
People who choose organic fruits and vegetables to avoid pesticides and other chemicals may have another reason to buy organic. A new study finds that organically grown tomatoes have higher levels of flavonoids, which may protect against cardiovascular disease.
Writing in The Journal of Agriculture and Food Chemistry, researchers said the level of one flavonoid in the organic tomatoes was almost twice as high as that in conventionally grown tomatoes.
The researchers, from the University of California, Davis, looked at tomatoes grown over a 10-year period in organic fields and regular ones. Not only did the organic tomatoes score better, they said, but over time their flavonoid levels kept increasing.