Former UFC middleweight Elias Theodorou recently passed away at the age of 34 leaving the MMA community in shock. Winner of the TUF Nations: Canada vs Australia back in 2014, Theodorou is considered to be a pioneer of Canadian MMA.The MMA community mourns the premature death of 'The Spartan' while reportedly batting stage 4 Liver cancer. UFC middleweight Kelvin Gastelum wrote on Twitter:"Horrible news to see, Canada lost a great one"#OnAmission4Gold@KelvinGastelumHorrible news to see, Canada lost a great one 1405Horrible news to see, Canada lost a great one 🇨🇦UFC welterweight staple Michael Chiesa teared up while recollecting an instance when Theodorou gave him his jacket for a press conference. 'Maverick' said in a Twitter video:"Elias and I went to EXOS a few times. I got asked on short notice to go and do a press conference about it and I didn't have a dress jacket, I didn't have anything with a collar... He took his jacket off and gave it to me. I never got a chance to give it back to him but that's the kind of guy he was."Michael Chiesa@MikeMav22Rest In Peace my friend. @EliasTheodorou1499140Rest In Peace my friend. @EliasTheodorou https://t.co/r51KnalsHLMichael Chiesa@MikeMav22Hearing the news about @EliasTheodorou. It’s hard to believe right now #RIP32724Hearing the news about @EliasTheodorou. It’s hard to believe right now 💔 #RIPUFC fighters Tanner Boser and Chris Curtis, amongst others, also offered their condolences.Chris Curtis The Action Man@Actionman513Took a nap to wake up and find out Elias Theodorou has passed. Way to young. You will be missed my guy. #LONGLIVETHESPARTAN1154Took a nap to wake up and find out Elias Theodorou has passed. Way to young. You will be missed my guy. #LONGLIVETHESPARTANTanner Boser@BulldozerBoserOh man, It’s so sad to hear about Elias Theodorou. May he Rest In Peace.493Oh man, It’s so sad to hear about Elias Theodorou. May he Rest In Peace.Kevin Iole@KevinIOh my Lord, just saw the horrible news that Elias Theodorou has passed away at only 34. He was an amazing and kind person. Just devastated to hear this. Rest in peace.474Oh my Lord, just saw the horrible news that Elias Theodorou has passed away at only 34. He was an amazing and kind person. Just devastated to hear this. Rest in peace.Nolan King@mma_kingsMan, this stings. Rest in peace, Elias Theodorou. You weren't just one hell of a fighter – you were someone who radiated positivity and stood up for what he believed in. twitter.com/MMAJunkie/stat…MMA Junkie@MMAJunkieFormer #UFC fighter Elias Theodorou dead at 34; MMA community mourns mmajunkie.usatoday.com/lists/ufc-news…3045Former #UFC fighter Elias Theodorou dead at 34; MMA community mourns mmajunkie.usatoday.com/lists/ufc-news…Man, this stings. Rest in peace, Elias Theodorou. You weren't just one hell of a fighter – you were someone who radiated positivity and stood up for what he believed in. 🙏 twitter.com/MMAJunkie/stat…Amy Kaplan@PhotoAmy33I am seeing some tweets about Elias Theodorou passing away from cancer. I can't find anything official but I am floored if it's true, had no idea he was sick. I will update if I hear anything.443I am seeing some tweets about Elias Theodorou passing away from cancer. I can't find anything official but I am floored if it's true, had no idea he was sick. I will update if I hear anything.Adam Martin@MMAdamMartinUnfortunately, the news about Elias Theodorou passing away is true. He was 34. From what I was told, he did have cancer but did not make it public.Elias was a pioneer of Canadian MMA. It's incredibly sad. RIP Elias, thank you for all the memories.1305207Unfortunately, the news about Elias Theodorou passing away is true. He was 34. From what I was told, he did have cancer but did not make it public.Elias was a pioneer of Canadian MMA. It's incredibly sad. RIP Elias, thank you for all the memories.Marcel Dorff 🇳🇱🇮🇩@BigMarcel24R.I.P. Elias Theodorou....I'm lost for words #TheManeEvent1255113R.I.P. Elias Theodorou....I'm lost for words 😥#TheManeEvent https://t.co/ke5lVJv7AkJeff Novitzky@JeffNovitzkyUFCRIP Elias Theodorou. A great person and a HUGE voice for the more fair and equitable treatment of marijuana use in MMA and sport.52057RIP Elias Theodorou. A great person and a HUGE voice for the more fair and equitable treatment of marijuana use in MMA and sport.Elias Theodorou earned a UFC contract with a decision win over Tyler Manawaroa at TUF Nations: Canada vs. Australia. 'The Spartan' ammassed a 8-3 record before being unceremoniously released from the promotion in 2019. At the time, Dana White claimed that the release was simply to make space for fighters with championship or top-five potential. However, Theodorou believed the UFC released him because they could pay multiple new guys with a single paycheck of his.Elias Theodorou has long been a proponent of marijuana legalizationLegalized marijuana use for athletes began January 2021, as long as it wasn't used for performance enhancing purposes. However, fighters like Elias Theodorou, who were the pioneers of the legalization battle, never got to reap the harvest.Theodorou was diagnosed with bilateral neuropathy, a result of damage to the nerves located outside the brain and spinal cord. However, 'The Spartan' was denied an exemption by the UFC and allegedly advised him to use more opioids. Theodorou said in an interview with CBS News:"They kept on telling me to take more prescription drugs, when my doctor and I knew that cannabis was right for me. They were telling me to take antidepressants and opioids, all while ironically or sadly having a campaign about the opioid crisis."CBS News@CBSNewsMMA fighter Elias Theodorou describes how cannabis being classified as a Schedule 1 drug delayed his medical exemption for years. cbsn.ws/3mcJmxW297MMA fighter Elias Theodorou describes how cannabis being classified as a Schedule 1 drug delayed his medical exemption for years. cbsn.ws/3mcJmxW https://t.co/TQRJ5ThRJVElias Theodorou continued his battle for marijuana legalization even after his UFC release in 2019. In 2020, 'The Spartan' became the first fighter to receive a therapeutic use exemption for medical cannabis, granted by the British Columbia Athletic Commission in Canada.