In 2010 , he had a successful surgery to remove it which helped him to gain his health back .
The tumor caused Stevenson to lose motivation and eventually made him gain weight , had a blood clot , diabetes and sleep apnea .
In 2010 , Stevenson had a successful surgery to remove it which helped Stevenson to gain Stevenson 's health back .
The tumor caused Stevenson to lose motivation and eventually made him gain weight , had a blood clot , diabetes and sleep apnea .