Self - Narrator
Self - Doctor (as Matthew Ledderman M.D.)
Self - Doctor (as Alona Pulde M.D.)
Self - Doctor (as T. Colin Campbell Ph.D.)
Self - Doctor (as Caldwell Esselstyn Jr. M.D.)
Self - Landscape Developer
Self - Doctor (as John McDougall M.D.)
Self - Director of University Nutrition, Washington University (as Connie Diekman MEd RD FADA)
Self - Executive Director, The Wellness Forum (as Pam Popper N.D.)
Self - Doctor (as Doug Lisle Ph.D.)
Self - Chicago Commissioner of Health (as Terry Mason M.D.)
Self - Diabetes Sufferer
Self - Doctor & Scientist (as Junshi Chen Ph.D.)
Self - Joey's Relative
Self - Patient
Self - Lee's Partner
Self - Doctor
Self - Ultimate Fighting Champion
Self - USDA (as David Klurfeld Ph.D.)
Self - Doctor (as Neal Barnard M.D.)
Self - Runner & Cancer Survivor
Self - Farm Owner
Self - Firefighter
Self