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A team of researchers backed by the Centre for Chronic Disease Prevention at Health Canada designed a study to look at dietary carotenoid intake and its link with pancreatic cancer. Carotenoids are usually found in grapefruit, peppers, carrots, watermelon and tomatoes. All the subjects were non-smokers as this is believed to be one of the main causes.
Over four years 4,700 healthy people and 462 patients used food questionnaires. The overall results were positive - a higher intake of carotenoids does reduce risk, but the biggest difference was found for lycopene: a 31 per cent reduced risk in the heavy intake group over the light eaters. Lycopene is commonly available in tomatoes and especially in cooked tomatoes.