In this second part of the 2-part episode "Vitamania," we dig in to the clinical trial data behind vitamins as dietary supplements. In Part 1 of this episode, we met a patient with Scurvy....and said that if you have Scurvy, Vitamin C definitely works. But what if you are generally nutritionally replete? What does the data say about the role of vitamins as dietary supplements in the > 99% of people who do NOT have any diseases of vitamin deficiency? And how much clinical trial data is there? And are the outcomes different for people with diabetes or established cardiovascular disease? We'll address all these questions....and then conclude by briefly addressing how commercial vitamins are made and why that accounts for the most common adverse effects that we see with vitamins.