seed oils have been demonized based on misunderstandings
In his first weeks leading the Tennessee Titans through a rebuilding effort, head coach Robert Saleh made an unexpected declaration: seed oils would no longer be served in the team facility. The move reflects a broader cultural moment in which questions about industrial food ingredients have migrated from wellness circles into professional sports, where marginal gains are pursued with unusual intensity. Nutrition science remains genuinely contested on the matter, and the practical stakes for NFL players extend beyond health — certain replacement oils carry the risk of triggering the league's drug-testing protocols, turning a cafeteria decision into a compliance question.
- A 3-14 season forced ownership to act, and Saleh arrived carrying both a rebuilding mandate and an unconventional nutritional philosophy that immediately reshaped the team's kitchen.
- The seed oil ban landed in the middle of a live scientific debate — a Johns Hopkins researcher pushed back publicly, arguing the oils have been unfairly demonized and carry abundant evidence of benefit.
- Beneath the nutrition argument lies a more urgent complication: hemp seed and poppy seed oils, common alternatives, can produce positive results on the NFL's drug tests, turning a wellness initiative into a potential liability.
- The Titans' nutrition staff is now threading a narrow path — finding replacement oils that satisfy the coach's philosophy without exposing players to failed tests or league discipline.
- The season opens September 13 against Saleh's former team, the Jets, giving the experiment a hard deadline and a very public stage on which to prove whether the cafeteria changes translate to the field.
Robert Saleh arrived in Tennessee with a clear mission: rebuild a franchise that had just finished 3-14 and develop Cam Ward, the rookie quarterback taken first overall. But among his earliest moves as head coach was one that had nothing to do with the playbook — he banned seed oils from the Titans' training facility entirely.
Speaking to reporters during rookie camp, Saleh said the removal of canola, soybean, and related oils was one of the first things his staff accomplished, and that players had responded positively. Owner Amy Adams Strunk backed the decision and allowed the coaching staff to expand what the cafeteria could offer as a result.
The announcement drew immediate scrutiny from the nutrition community. Matti Marklund, an assistant professor at Johns Hopkins Bloomberg School of Public Health, argued that seed oils carry strong evidence of being beneficial to human health and that their reputation had been distorted — partly because of their association with ultra-processed foods rather than any inherent harm.
The debate over health, however, quickly gave way to a more concrete concern: NFL drug-testing rules. Certain oils commonly used as seed oil alternatives — hemp seed oil and poppy seed oil among them — can produce trace amounts of THC metabolites or opiates at levels sufficient to trigger a positive test. The National Library of Medicine has documented cases where poppy seed consumption alone led to confirmed opiate results. The league has previously warned players about contamination risks in food, including a 2016 memo about clenbuterol in meat from certain countries.
Saleh expressed confidence in his nutrition staff, and the team is now working through which replacement oils are both effective and safe under league protocols. The regular season begins September 13 at home against the New York Jets — the team Saleh led from 2021 through 2024 — giving the experiment a firm and meaningful deadline.
Robert Saleh arrived at the Tennessee Titans with a mandate to rebuild. The team had finished 2025 at 3-14, prompting ownership to fire Brian Callahan and bring in Saleh from his defensive coordinator post with the San Francisco 49ers. Now, in his second chance as an NFL head coach, Saleh faces the task of developing Cam Ward, the rookie quarterback who threw 15 touchdowns and seven interceptions in his first season after being selected first overall.
But Saleh's opening moves extended beyond the practice field. When his first rookie camp convened this week, the new coach announced a decision that would ripple through the nutrition world: seed oils—canola, soybean, and their cousins—were being removed from the Titans' training facility. In their place, the team's nutrition staff would introduce alternatives Saleh believed better served player performance. "One of the first things I think that we did here is get rid of all of the seed oils in the building, which I think the players appreciate," Saleh told reporters Thursday. He credited owner Amy Adams Strunk with backing the move and allowing the coaching staff to expand the cafeteria's offerings.
The announcement landed in a field already divided. Matti Marklund, an assistant professor at Johns Hopkins Bloomberg School of Public Health, pushed back sharply. Seed oils, Marklund argued, carry "abundant evidence" of being beneficial to human health. The real problem, he suggested, was not the oils themselves but a cascade of misunderstandings about how they're manufactured and metabolized—compounded by their prevalence in ultra-processed foods. Seed oils, in his view, had been unfairly demonized.
Yet the decision raised practical complications that extended beyond nutritional philosophy. The NFL's drug-testing protocols create genuine hazards for players consuming certain oils. Hemp seed oil, commonly used in dressings and drizzled over finished dishes, is generally free of cannabinoids. But unrefined hemp oils, hemp seed protein powders, and products made from whole or crushed hemp seeds can harbor trace THC metabolites. High enough concentrations could trigger a positive marijuana test. Poppy seed oil, sometimes found in muffins and bagels, carries its own risk: trace amounts of morphine and codeine that, in sufficient quantity, could produce a positive opiate result. The National Library of Medicine has documented cases where poppy seed consumption alone yielded positive drug tests, creating confusion in both forensic and clinical settings.
This was not Saleh's first encounter with such complications. In 2016, the independent administrator of the NFL's drug-testing program had warned players against consuming meat from China and Mexico, citing clenbuterol contamination—a stimulant linked to muscle growth and weight loss that violates the league's performance-enhancing drug policy. A single memo cautioned that eating large quantities of meat from those countries could produce a positive test.
The Titans' nutrition staff is now working closely with coaches and players to navigate the transition away from conventional seed oils. What replaces them—and whether those alternatives carry their own testing risks—remains to be seen. Saleh has expressed confidence in his new nutrition team, saying he'd "put this staff up there with the best of them" across his six previous NFL stops. The regular season opens September 13 with a homecoming of sorts: the Titans host the New York Jets, the team Saleh coached from 2021 through 2024. By then, the cafeteria will have settled into its new rhythm, and the real test of whether removing seed oils moves the needle on player performance will begin.
Citas Notables
One of the first things I think that we did here is get rid of all of the seed oils in the building, which I think the players appreciate.— Robert Saleh, Titans head coach
There is abundant evidence suggesting that seed oils are not bad for you. If anything, they are good for you.— Matti Marklund, Johns Hopkins Bloomberg School of Public Health
La Conversación del Hearth Otra perspectiva de la historia
Why would a head coach make a nutrition decision his first week on the job? Doesn't that seem like a lower priority than, say, installing an offense?
It signals something about how Saleh thinks. He's saying player wellness is foundational. You can't build a winning team if the guys aren't fueled right. It's also a quick win—something tangible he can point to that shows he's making changes.
But the science seems to contradict him. This Johns Hopkins researcher is saying seed oils are actually good for you.
Right. That's the tension. Saleh may be responding to a broader cultural skepticism about seed oils that isn't fully supported by evidence. Or he may know something about how his specific players respond to different fuels. Either way, he's betting that his players will perform better without them.
What about the drug-testing angle? That seems like a real problem if they switch to hemp or poppy seed oil.
Exactly. That's the hidden complexity. You can't just swap one oil for another without thinking about what trace compounds might be in it. A player could unknowingly consume something that flags them as positive for THC or opiates. The team's nutrition staff has to be very careful about what they choose.
Has this happened before in the NFL?
The league has warned players about contaminated meat from certain countries. So yes, the NFL knows that what athletes eat can create false positives. It's a real risk, not theoretical.
So Saleh's move could actually create problems if they're not thoughtful about the replacement.
Absolutely. The irony is that by trying to improve player health, he could inadvertently expose them to testing violations. That's why the nutrition staff's role here is critical.