Subjects will come after a 12h overnight fast to the Risk Factor Modification Center at St. Michael's Hospital or the Department of Nutritional Sciences, University of Toronto immediately prior to commencement of each treatment phase and at weekly intervals during the course of each study period. Prior to the start of the study, subjects will be instructed on details of the study diet protocol. They will also be asked to maintain a constant level of physical activity throughout the course of the study. At all visits, body weight (in kg) will be obtained in indoor clothing, without shoes, and blood pressure will be taken twice in the dominant arm after subjects have been seated for at least 20 minutes. Height (in cm) will be recorded at the first visit. Throughout the study period, subjects will maintain the diet prescribed on their initial visit. At every other visit of each treatment phase, subjects will provide a fasting blood sample. The kinetic tests of lipoprotein metabolism will be performed during the 4th and 8th week of the study. At baseline and during the last week of each study phase, 24h urine collection and 12h breath hydrogen collections will be completed.