Vegetables abd fruits if eaten for long periods of time may help protect against lung cancer, a new study suggests. Researchers in the US collected information from 77,000 women and 47,000 men about their diet. They then followed the participants for 10 years to discover those who contracted lung cancer. Researchers found that participants who consumed the highest amounts of fruits and vegetables had a 20% to 25% lower risk of lung cancer compared to those consuming lower amounts. No changes in lung cancer risk were associated either with taking multivitamin supplements or with taking beta-carotene. In addition, carotenoids in food had to be consumed for at least four years before a definite effect was found. Results of the study appear in the October issue of the American Journal of Clinical Nutrition.