Olfaction in eating disorders and abnormal eating behavior: a systematic review.
The study provides a systematic review that explores the current literature on olfactory capacity in abnormal eating behavior. The objective is to present a basis for discussion on whether research in olfaction in eating disorders may offer additional insight with regard to the complex etiopathology of eating disorders (ED) and abnormal eating behaviors. Electronic databases (Medline, PsycINFO, PubMed, Science Direct, and Web of Science) were searched using the components in relation to olfaction and combining them with the components related to abnormal eating behavior. Out of 1352 articles, titles were first excluded by title (n = 64) and then by abstract and fulltext resulting in a final selection of 14 articles (820 patients and 385 control participants) for this review. The highest number of existing literature on olfaction in ED were carried out with AN patients (78.6%) followed by BN patients (35.7%) and obese individuals (14.3%). Most studies were only conducted on females. The general findings support that olfaction is altered in AN and in obesity and indicates toward there being little to no difference in olfactory capacity between BN patients and the general population. Due to the limited number of studies and heterogeneity this review stresses on the importance of more research on olfaction and abnormal eating behavior.
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain.
Mohammed A
MA
Islam
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain.
Ana B
AB
Fagundo
Leicester Eating Disorder Service, Bennion Centre, Leicester Glenfield Hospital Leicester, UK ; Division of Psychiatry and Applied Psychology, Faculty of Medicine and Health Sciences, University of Nottingham Nottingham, UK.
Jon
J
Arcelus
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain.
Zaida
Z
Agüera
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Clinical Sciences, School of Medicine, University of Barcelona Barcelona, Spain.
Susana
S
Jiménez-Murcia
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IdlBGi) Hospital Dr Josep Trueta Girona, Spain.
José M
JM
Fernández-Real
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Diabetes, Endocrinology and Nutrition, Hospital Clínico Universitario Virgen de Victoria Málaga, Spain.
Francisco J
FJ
Tinahones
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Facultat de Ciencies de la Salut i de la Vida, Universitat Pompeu Fabra (CEXS-UPF) Barcelona, Spain ; Integrative Pharmacology and Neurosciences Systems Research Group, Neuroscience Research Program, IMIM (Hospital del Mar Medical Research Institute) Barcelona, Spain.
Rafael
R
de la Torre
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Basic Psychology, Clinic and Psychobiology, University Jaume I Castelló, Spain.
Cristina
C
Botella
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, University of Navarra, IdiSNA Pamplona, Spain.
Gema
G
Frühbeck
CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Endocrine Division, Complejo Hospitalario Universitario de Santiago Santiago de Compostela, Spain.
Felipe F
FF
Casanueva
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; Department of Clinical Sciences, School of Medicine, University of Barcelona Barcelona, Spain ; CIBER de Salud Mental (CIBERSAM) Madrid, Spain.
José M
JM
Menchón
Department of Psychiatry, University Hospital of Bellvitge-IDIBELL Barcelona, Spain ; CIBER de Fisiopatologia de la Obesidad y Nutrición -ISCIII Barcelona, Spain ; Department of Clinical Sciences, School of Medicine, University of Barcelona Barcelona, Spain.
Fernando
F
Fernandez-Aranda
abnormal eating; anorexia nervosa; binge eating disorder; bulimia nervosa; obesity; olfaction; sniffin' sticks; systematic review