Jim Stork rumor

I hate to be the purveyor of rumors and innuendo, but I just got the following message from Jim Stork's campaign:

Dear Friend,

I realize that in the past few days you may have heard some rumors that I have decided to leave the race for U.S. Congress in District 22.  I wanted to write to you personally and let you know that those rumors are untrue.  I am currently undergoing some medical tests and will be in touch as soon as I know more.  Right now, I am simply looking forward to putting these health issues behind me and moving forward.  

I'll see you out on the trail!

Best,

Jim Stork

Does anyone know what this is about?  Is there some rumor circulating around South Florida that I don't know about?  Please tell me what is going on!