Shawn Kemp performed most of his N.B.A. profession earlier than the league started testing gamers for marijuana use in 1999. So after enjoying within the bruising, bodily video games typical of the N.B.A. within the Nineteen Nineties, he would smoke. He didn’t like taking pain-relief capsules.

“I used to be capable of go residence and smoke pot, and it was capable of profit my physique, calm my physique down,” stated Kemp, who’s 6-foot-10 and was upward of 230 kilos throughout his 14-year profession of highlight-reel dunks, largely with the Seattle SuperSonics. He stated the drug appeared to assist with irritation in his knees and different joints.

Now Kemp, 52, owns a stake in a Seattle marijuana dispensary bearing his identify.

Within the 20 years for the reason that N.B.A. and its gamers’ union agreed to start testing for marijuana, or hashish, the drug’s notion has undergone a makeover in america, the place it has been unlawful for many years. Researchers don’t absolutely perceive its attainable medical advantages or dangerous results, but it surely has change into authorized in lots of states and a few skilled sports activities leagues are reconsidering punitive insurance policies round its use. Many athletes say they use hashish for ache administration.

Brittney Griner is one among them.

Griner, a W.N.B.A. star, was detained in Russia in February after customs officers stated they discovered vape cartridges with cannabis oil, a hashish by-product, in her baggage. Hashish is illegitimate in Russia, and Griner, 31, faces a 10-year sentence in a Russian penal colony on drug trafficking fees if she is formally convicted. She has pleaded responsible, however testified that she didn’t intend to pack the cartridges. Her authorized workforce stated she was licensed to make use of medicinal hashish in Arizona, the place she has performed for the Phoenix Mercury since 2013.

Griner’s case has drawn consideration to the talk over marijuana use for recreation and reduction. The U.S. State Division stated it thought of Griner to be “wrongfully detained” and would work for her launch regardless of how the trial ended. However in america, 1000’s of individuals are in jail for utilizing or promoting marijuana, and it stays unlawful on the federal degree at the same time as dozens of states have legalized it for medicinal use or leisure use. It’s banned within the W.N.B.A.

Kemp and lots of others are urging sports activities leagues and lawmakers to vary.

“There’s nonetheless quite a bit for folks to study all through the world with these things,” Kemp stated. “And hopefully they may sometime, the place folks will see hashish oil and all this stuff and understand some athletes use these things to learn their physique, calm their physique down from beating up their physique a lot every day.”

Kemp stated he was deeply saddened when he heard about Griner’s detention.

“I’m such a fan of hers, to see her with that massive, tall physique to have the ability to transfer the way in which she does. She’s modified the sport of the W.N.B.A.,” he stated.

In testimony at her trial, Griner described accidents to her backbone, ankle and knees, a few of which required her to make use of a wheelchair for months, in keeping with Reuters. Like Kemp, the 6-foot-9 Griner has endured bumping and banging as she battled for rebounds and dunks. Many athletes consider marijuana is more healthy for coping with ache and nervousness than the addictive opioids and different drugs traditionally prescribed by docs.

Eugene Monroe, a former N.F.L. participant who has invested in hashish corporations, stated he started utilizing hashish for ache reduction after he realized different kinds of drugs weren’t working for him.

“Going into the constructing day-after-day, getting Vicodin, anti-inflammatories — there was one thing about that, over time, that made me suppose: ‘Am I even needing these capsules? Is that this an habit inflicting me to return in right here and see the workforce physician?’” Monroe stated.

The N.F.L. relaxed its marijuana coverage in 2020 to permit for restricted use, however it may well nonetheless high-quality and droop gamers for exceeding the boundaries. Within the basketball leagues, solely repeated offenses result in a suspension. Griner won’t face punishment from the W.N.B.A. if she returns to the league, an official who was not licensed to talk on the report due to the sensitivity of the matter informed The New York Instances.

The N.B.A. halted testing when the coronavirus pandemic started, saying it was specializing in performance-enhancing medicine as a substitute. Main League Baseball eliminated marijuana from its checklist of banned substances in 2019, however gamers can nonetheless be disciplined for being underneath the affect throughout workforce actions or breaking the regulation to make use of it (as, for instance, they may very well be for driving drunk). The N.H.L. exams for marijuana, however doesn’t penalize gamers for a optimistic end result.

Final 12 months, Kevin Durant, the All-Star ahead for the N.B.A.’s Nets, introduced a partnership with the tech firm Weedmaps, which helps customers discover marijuana dispensaries. “I believe it’s far previous time to deal with the stigmas round hashish that also exist within the sports activities world in addition to globally,” Durant informed ESPN, which stated he declined to debate whether or not he used marijuana.

Al Harrington, a retired N.B.A. participant who has invested in hashish corporations, informed GQ final 12 months that he thought 85 % of N.B.A. gamers used “some sort of hashish.”

The W.N.B.A.’s Sue Chicken has endorsed a hashish merchandise model geared toward athletes. Lauren Jackson, a girls’s basketball nice, credited medicinal hashish for her long-awaited return to the court docket this 12 months after coping with continual knee ache. She is listed on the advisory board of an Australian firm that sells hashish merchandise. Many former N.B.A. and N.F.L. gamers, just like the retired Detroit Lions star Calvin Johnson, have invested in hashish corporations.

A few month earlier than Griner’s detention turned public, the N.F.L. introduced it had granted $1 million in whole to the College of California, San Diego, and Canada’s College of Regina to check the results of cannabinoids — the compounds in hashish — on ache administration. U.C. San Diego’s analysis will contain skilled rugby gamers.

Till lately, hashish analysis has sometimes centered on abuse and whether or not it enhances efficiency in sports activities, relatively than any potential advantages.

In 2017, the Nationwide Academies of Sciences, Engineering, and Medication stated a assessment of analysis since 1999 had proven “substantial proof that hashish is an efficient therapy for continual ache in adults.” However its assessment additionally discovered indications that hashish use can hinder studying, reminiscence and a spotlight and that its common use seemingly will increase the chance of growing social nervousness issues. There was additionally average proof that recurrently smoking marijuana might trigger respiratory issues.

One other assessment printed within the Scientific Journal of Sport Medication in 2018 discovered that early hashish analysis confirmed a lower in athletic efficiency. It additionally stated there was little analysis inspecting hashish use in elite athletes.

Kevin Boehnke, a researcher on the College of Michigan’s Continual Ache and Fatigue Analysis Middle, stated “hashish tends to be safer” than anti-inflammatories and opioids which can be typically used for continual ache.

“That doesn’t imply it’s with out threat,” he stated, however added that the aim needs to be to make use of therapies which can be the “lowest threat and most acceptable to the one that’s utilizing it.”

“At this level there’s not likely a great justification from at the very least a ache administration standpoint of why that shouldn’t be an accessible device,” he stated.

Dr. David R. McDuff, the director of the sports activities psychiatry program on the College of Maryland, stated many substance abuse referrals early in his profession concerned athletes who had been binge-drinking alcohol. Later, he noticed a shift to sufferers who had been utilizing hashish.

“When you have a look at the universe of those who use hashish, about 10 % of these will develop a hashish use dysfunction,” stated Dr. McDuff, who focuses on habit and trauma. “They are often very critical. They normally will begin by decreasing motivation and initiative.”

He stated he was notably involved about how hashish might have an effect on adolescents’ mind improvement.

Regardless of his warning, Dr. McDuff stated he believes hashish has medicinal properties that needs to be higher studied. He stated one barrier to that taking place in america is marijuana’s federal classification as a Schedule I drug, which means it’s stated to don’t have any medical use and is prone to be abused. It’s in the identical class as medicine like heroin and ecstasy.

Dennis Jensen, a researcher at McGill College in Montreal, stated Canada’s 2018 marijuana legalization opened the door for extra analysis there.

“There’s numerous anecdotes, there’s numerous particular person athlete stories, however the analysis doesn’t essentially help or refute something that they’re saying as of but,” he stated.

Riley Cote, a former member of the N.H.L.’s Philadelphia Flyers, stated he tried marijuana as a youth participant and located that it relieved his ache from combating throughout video games, though he didn’t perceive why. He co-founded Athletes for CARE, a nonprofit that promotes schooling and analysis for utilizing hashish and hemp as therapeutic options. It receives some funding from hashish product and branding corporations.

Anna Symonds, an expert rugby participant and a member of Athletes for CARE, stated she was heartbroken and pissed off when she realized why Griner had been detained. “It’s ridiculous that hashish is criminalized, and that causes many extra issues than it ever might remedy,” she stated.

Symonds stated she tried painkillers and muscle relaxants to ease the ache from muscle spasms and herniated and bulging discs in her again. Nothing, she stated, labored like hashish.

Ricky Williams, a former N.F.L. participant, stated he hoped Griner’s state of affairs would trigger folks to consider these imprisoned in america for cannabis-related offenses. Williams began a hashish model final 12 months.

He gained the Heisman Trophy in 1998, however had a halting N.F.L. profession partially due to self-discipline from the league associated to his marijuana use.

“I worth feeling good, and I’m comfy pushing the boundary of the principles, so I saved on going with it,” Williams stated. “For me it turned a problem as a result of what I did for a residing conflicted with my option to devour hashish.”

Utilizing marijuana helped him understand that enjoying soccer was not what he needed to do for a residing, he stated.

“I take advantage of hashish now to intensify what I do, to not cope with my life,” Williams stated.

Whereas he believes hashish helps with ache, he needs its use was extra extensively accepted even for these with out continual ache.

“I look ahead to the day when the N.F.L. says, ‘This appears to actually assist our gamers, they really need it and we haven’t discovered any cause to not do it so let’s help it,’” Williams stated. He added: “Not less than ask, have that dialog as a substitute of simply assuming that they’re doing one thing dangerous, after which punishing them. That was what occurred to me and it doesn’t make any sense.”

For Kemp, whose N.B.A. profession resulted in 2003, the altering temper about marijuana use amongst athletes like Griner is welcome, if maybe too late for him. “I might have saved enjoying basketball if I might have used marijuana merchandise again once I retired,” he stated.

He and his spouse normally exit to see Griner’s Mercury play the Seattle Storm every summer time. The groups’ matchups have come and gone this season, with out the detained Griner, however she’s nonetheless on Kemp’s thoughts. “Hopefully she will be able to get residence with a protected return,” he stated. “I miss seeing her play.”