Ambry Thomas has colitis. No word on whether it is ulcerative (chronic) or infectious (acute). The timeline, with first concerns popping up around May/June, may line up better with the chronic condition, unfortunately. He gained then lost 20-25 pounds this offseason, landing him back at his playing weight from last year.
CB might as well be the only position I'm worried about now. It's surely not RB. And I'm getting more sanguine about DT. But CB has almost no one behind Ambry and Levert.