Perhaps even more palpable than the economic and social exploitation is the compounding reality that tackle football is and always has been an inherently violent producer of long-term corporeal harm. Deeply embedded in football culture and practice is a foundational acceptance and rewarding of heteromasculine physical violence and its consequences even from the youth level. Kathleen Bachynski has documented the deleterious consequences of a football culture premised on the "necessity" of violent labor. (...) Given that between 91 and 99 percent of US college football players posthumously examined display neuropathology consistent with the degenerative brain disorder CTE, we hold that sacrifice is a nearly universal feature of Power Five college football, not merely an incidental and unfortunate coincidence.

— The End of College Football by Nathan Kalman-Lamb, Derek Silva