This is a very informative documentary featuring Dr. Greger. He presents viewers with all of the latest information and facts in regards to health and nutrition. He shows and explains how a healthy vegan diet has the power to prevent, treat, and even reverse some of the top 20 causes of death. Including the most popular ones: heart disease, stroke, and cancer! The information he provides is all backed up by scientific and nutritional studies that have been featured in many medical journals, so it’s not just opinion.