Calvin Johnson, Rob Sims & Primitiv: NFL-Harvard CTE Partnership
Calvin Johnson and Rob Sims founded Primitiv Group in Niles, Michigan in 2021. The Harvard International Phytomedicines and Medical Cannabis Institute partnership (Prof. Wilfred Ngwa) on chronic pain and CTE applications.
The Player Who Was Never Suspended
Most of the NFL cases that drove cannabis-policy reform are stories of suspension — Ricky Williams missing the 2004 and 2006 seasons, Josh Gordon's prime erased between 2014 and 2019. Calvin Johnson's case is structurally different. Johnson was never suspended under the pre-2020 NFL Substance Abuse Policy. His relevance to the policy story is the post-career: his retirement decision, his Primitiv launch, and the Harvard research partnership that flowed from it.
Retirement, Pain Management, and the Frame
Johnson retired from the NFL after the 2015 season, citing pain management as a factor in the decision. The framing matters: a Hall-of-Fame-trajectory wide receiver leaving the league at age 30, on the record about cumulative pain, was an early signal that the league's pre-2020 reliance on opioids and NSAIDs was a question the alumni network would not stay quiet about — the same question Eugene Monroe raised explicitly in his May 2016 Players' Tribune op-ed.
2021: Primitiv Group, Niles, Michigan
In 2021, Johnson and former Detroit Lions teammate Rob Sims co-founded Primitiv Group, headquartered in Niles, Michigan. The company operates cultivation and retail under Michigan's adult-use framework. Primitiv is one of the most named NFL-alumni cannabis ventures, alongside Williams's Real Wellness/Highsman, Marshawn Lynch's Dodi Blunts, Marvin Washington's Athletes for CARE founding role, and Kyle Turley's Neuro XPF.
The Harvard Phytomedicines & Medical Cannabis Institute Partnership
What distinguishes Primitiv from its peers is the formal research partnership: Primitiv works with the Harvard International Phytomedicines and Medical Cannabis Institute, led by Professor Wilfred Ngwa, on cannabis applications for chronic pain and chronic traumatic encephalopathy (CTE). Both endpoints are directly relevant to NFL alumni health: chronic pain is the domain that drove most of the league's pre-2020 opioid problem, and CTE is the long-tail neurological consequence that has shaped the alumni health conversation since the 2015 settlement of the NFL concussion litigation.
The Primitiv-Harvard partnership pairs the operational cannabis-business side of the NFL alumni network with academic-grade research infrastructure. It complements, but does not duplicate, the Joint Pain Management Committee awards announced February 1, 2022 to UC San Diego (Drs. Mark Wallace and Thomas Marcotte, vaporised cannabis for soft-tissue injury pain) and the University of Regina (Dr. Patrick Neary, cannabinoids for concussion neuroprotection).
Why the CTE Question Matters
CTE is the strongest single argument for serious cannabinoid research in football alumni cohorts. The pathology is real, the alumni-population prevalence is substantial, and the existing pharmacological toolkit is limited. ⚠️ Emerging Cannabinoid neuroprotection in CTE is preclinical-and-early-clinical: there is no current evidence base sufficient for clinical recommendations, but the mechanistic literature on CB2-mediated neuroinflammation and CB1-mediated excitotoxicity is sufficient to justify human trials. The Primitiv-Harvard partnership and the parallel Regina/ASPN/Emory PMC awards are the principal ongoing efforts.
The Significance of "Never Suspended"
That Johnson never failed an NFL cannabis test — or, more precisely, was never publicly disciplined under the pre-2020 framework — is part of why his post-career advocacy lands the way it does. It separates the case from the personal-redemption framing that attached to the Williams/Gordon arc and locates Johnson's involvement in the cannabis-policy story squarely on the medical-research side: a player who left the league citing pain, then built a company partnered with Harvard to study that pain.
Where the Calvin Johnson Story Sits in the Policy Map
The Primitiv-Harvard work feeds directly into the network's pain & inflammation and ECS-research pages, into the Athlete-Founded Brands resource list, and into the NFL section's entrepreneur-ecosystem subsection. It is the case that ties the post-career advocacy thread (Monroe, Williams, Washington) to the formal research-funding thread (PMC awards, UC San Diego, Regina) to the operational cannabis-business thread (Primitiv, Highsman, Real Wellness).