"I kept thinking how these guys were basically prisoners, unable to return to their homes or to their normal lives... and how much of the symptoms they exhibited related to this rather than to the inadequate portions of food."
Sun,
They certainly were prisoners. The larger issue of the experiment was not even addressed in the article though, that is, they could either participate in the experiment, or be drafted. The starvation experiment was definitely unethical. But the problem remains that these men were facing a military draft if they did not take part. They really had no choice. I don't see how being put into that kind of a situation could not have had at least "some" effect on the behavior of the men in the starvation experiment.