It seems that there is no longer a Metabolism stat in the Health tab. It has been replaced by Digestion, and I'm not sure if it works the same as Metabolism did. I guess Metabolism got moved into genetics with Biotech, and now Digestion is used as a pawn capacity instead. I can't really find any information on it, and I just had a pawn acid spray her own stomach and destroy it, so it'd be useful to have some info. -_-