I dont know Mitch, I was wondering this too, although I have incorporated them into my meal plans (maybe 1 or 2 week).  My challenge is going well (lost 12 lbs and almost 13" overall and it's been 8 weeks).  I am going to continue to include them as it isnt hurting my progress.

Probably the high sugar content.. but I think if you buy them green and eat them before they ripen they would be fine? Much less sugar..

Bananas are not on the list but they are in the book. I think Bill referred to them as a perfect portable snack, along with protein of course. Take care.

KMsBFL - you are right!  I just read it....cool - thanks for reminding me of that!!  

www.livestrong.com/.../422323-should-i-stop-eating-bananas-if-im-trying-to-lose-weight