Americans supply two-thirds of the world’s plasma, supporting an industry that relies on vulnerable donors in need of cash. Editor’s note: Our graphic at 1:41 misstates the amount of protein in plasma. It should be 7%, not 9%. Our apologies. MORE SO EXPENSIVE VIDEOS: Why Gold Is So Expensive | So Expensive youtube.com/watch?v=QCQ_d0NOF4g Why Lotus Silk Is So Expensive | So Expensive youtube.com/watch?v=S9F-u4T7leQ Why Real Truffles Are So Expensive | So Expensive youtube.com/watch?v=RQ1nY51txoA ------------------------------------------------------ #BloodPlasma #SoExpensive #BusinessInsider Business Insider tells you all you need to know about business, finance, tech, retail, and more. Visit us at: businessinsider.com Subscribe: youtube.com/user/businessinsider BI on Facebook: read.bi/2xOcEcj BI on Instagram: read.bi/2Q2D29T BI on Twitter: read.bi/2xCnzGF BI on Amazon Prime: read.bi/PrimeVi...