NPW and anorexia nervosa: Thus it could be suggested that those newly discovered molecules could be of importance in both diagnostics and prognosis of anorexia nervosa progression; they include neuropeptide B [11, 12], neuropeptide W [13–15], and vaspin [16–18] but their specific role and involvement in the disorder are poorly understood (in the case of neuropeptide B and neuropeptide W suggestions have been based only on animal studies).