Mary Ellen Fain and Dr. Norman Pollock, Medical College of Georgia at Augusta University (image) Medical College of Georgia at Augusta University Share Print E-Mail Caption A study of 766 otherwise healthy adolescents showed that those who consumed the least vitamin K1 -- found in spinach, cabbage, iceberg lettuce and olive oil -- were at 3.3 times greater risk for an unhealthy enlargement of the major pumping chamber of their heart, according to the study published in The Journal of Nutrition. Vitamin K1, or phylloquinone, is the predominant form of vitamin K in the US diet. "Those who consumed less had more risk," says Dr. Norman Pollock, bone biologist at the Georgia Prevention Institute at the Medical College of Georgia at Augusta University and the study's corresponding author. Credit Phil Jones, Senior Photographer, Augusta University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.