Research suggests that eating lots of fruits and vegetables may provide some protectionagainst several types of cancer. Studies have revealed that the risk of getting cancerassociated with the lowest intake of fruits and vegetables is twice as high as thatassociated with the highest intakes. This association holds for several types of cancer, including cancers of the breast, colon, pancreas, and bladder. A= Eating lots of fruits and vegetablesE= Getting cancer. If the general population did more of A, there would be less of E. If the general popluation does less of A, there will be more of E. method of concomitant variation