I have thyroid issues. Can I do the gastric sleeve?

That would be possible to get surgery but a gastric band may be a first choice because the procedure is reversible if you have problems after surgery. But you should see and consult with a baristric doctor before you make a decision.

Of course it would be better if you could give a more precise explanation of what you mean by "thyroid issues," but I can't think of one thyroid problem that would have any effect on choice of weight loss operations.  I disagree with my colleague on choice of operation.  Even though gastric bands can be removed, the operation causes irreversible scarring on the stomach, making it more difficult to do any other operation.  Failure rate with gastric banding is so high that I would only recommend this operation to people I dislike.  :) There is no reason not to choose a sleeve gastrectomy.