Federally-backed cannabis research is extremely limited, and its plant material can only come from a single farm in Mississippi at this time. That farm has come under fire for failing to represent the actual cannabis on the market - in fact, their leader says there is "no good reason" for THC percentages beyond 8%.  This article examines how current federal research is failing cannabis consumers, the application of different THC percentages, and how they relate to changing consumer preferences. One Article Discussed [1] “Head of only Federal Marijuana Farm thinks 8% THC Marijuana is ‘Extremely’ Potent” from Marijuana Moment