Still, I'm glad to see more attention to the medical issues here and some evidence being gathered: I have heard privately from several clinicians who do think the level of timidity of early re-feeding is based on urban legend and not facts - and in reality may be harming patients in the long-term.
Most alarming, and seen in the New York Times article about a small study on avoiding re-feeding syndrome, is the idea that the patient's desires and distress should be part of the calculation. Yes, eating disorder patients find it traumatic and undesirable to gain weight more quickly or at all -- that's the most prominent symptom of an eating disorder! Avoiding re-feeding syndrome is a VERY important medical issue but can not be obscured by the patient's cognitions and insight.
What if chemo patients were treated this way: their tumors were considered less of a danger than the chemo? Insulin shots and chemo and debriding wounds are all distressing and traumatic but our job is to comfort and support our loved ones through that and not to damage their health by avoiding appropriate medical care.