An undisclosed medical condition has forced 2014 Madill High alumnus Karson Green to retire from playing football for Iowa State University.

Green said Wednesday afternoon that he “can’t disclose any more information about his condition at this time.”

“Back in October, I started experiencing a lot of medical issues that cause me to not be able to perform at the level I wanted while here at ISU,” Green wrote on his Twitter page. “My symptoms progressed and it forced me into a retirement to better my body and my lifelong well-being. It breaks my heart to stop playing the sport I love so much.”

Green wrote that he is “on track” to graduate in December with a Bachelor’s degree in liberal arts and sciences. Then, he plans to start coaching and teaching while working toward earning a Master’s degree in sports management. His goal is to become a high school athletic director and a football coach. 

“For those of you who know me, you know that football is one of the many loves of my live,” he wrote. “Since I was a small kid, I would draw up plays and formations in my playbook. It was always sport of choice and I have a passion for it … 

“Football taught me how to work hard, love every second of your life, discipline and many life lessons.”

Green began his collegiate career at Northeastern Oklahoma A&M College, where he was rated the No. 1 junior college offensive tackle in Oklahoma, before signing with Iowa State on Dec. 17, 2015.

Green thanked Shelby Alexander, his mother Kasie King, father Keith Green, grandparents and other family members for their support through “this difficult time in my life.”