Minnesota farmers grow soybeans mainly for cattle feed, but a growing body of research suggests people may want to include the beans in their daily diet. Nutritionist, Mark Messina has studied the health benefits of soybeans for the National Institutes of Health. Today, he will be in Saint Paul speaking to a group of registered dietitions about the health virtues of soybeans. Messina told Minnesota Public Radio's Lorna Benson, soybeans are the only plant known to contain special chemicals called isoflavones that could lower the risk of osteoporosis, cancer, heart disease.