Start-up makes millions selling ‘brain hacking’ pills, but its own study found coffee works better

HVMN, a San Francisco start-up backed by former Yahoo CEO Marissa Mayer and Andreessen Horowitz, advertises its $40-a-bottle supplements as “biohacking” compounds that will help people achieve “optimal human performance.” But CNBC has learned that the first clinical trial study commissioned by HVMN (pronounced “human”) found that one of its best-selling supplements was less effective […]