[Ghoulish Delight]

Hmm, one more interesting detail.

In the first experiment, where the 12h HFCS group gained more weight. The rats in that group were actually observed to be consuming less of their HFCS solution than the rats int he sucrose group were consuming of their solution. But their total caloric intake was the same. Meaning, since the solutions were the same calories/volume, the HFCS rats were making up the difference by eating more of the chow. So it's entirely possible that the extra chow was the mechanism for the weight gain (and possible that the HFCS induced them to eat more chow).