In order to participate in islet transplantation, Mark needed to lose weight. Therefore, he limited drinking his favorite beer, which he was brewing at home for years and gave up his sedentary lifestyle. He started walking his dog first and gradually transitioned to short runs. He received his only islet transplant 5 years ago.

Afterwards, he started running regularly increasing the distance. 

Eventually, he ran a half marathon and lost 15 pounds.

His islet function has been stable without need for any insulin support so far for 5 and half years!

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Since his islet transplant, he has completed 12 half marathons!

Congratulation Mark!