Whole Grain (IMAGE) Penn State Caption Paul Helton, one of the study participants, examines whole-grain foods and the refined foods used in the research. The study found that diets with high amounts of whole grains may help achieve significant weight loss, and also reduce the risk of chronic diseases such as diabetes and cardiovascular disease. Credit Heather Katcher, Penn State Usage Restrictions with this story only License Licensed content 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.