Correction to: Very long chain fatty acids are an important marker of nutritional status in patients with anorexia nervosa: a case control study.

[This corrects the article DOI: 10.1186/s13030-020-00186-8.].

Very long chain fatty acids are an important marker of nutritional status in patients with anorexia nervosa: a case control study.

Background: Anorexia nervosa (AN) is a disease resulting in extreme weight loss. It is caused by multiple factors, including psychosocial, environmental, and genetic factors. A genetic abnormality affecting lipid metabolism has been recently reported in patients with AN.

Cognitive behavioral therapy with interoceptive exposure and complementary video materials for irritable bowel syndrome (IBS): protocol for a multicenter randomized controlled trial in Japan.

Background: There is growing evidence of the treatment efficacy of cognitive behavioral therapy (CBT) for irritable bowel syndrome (IBS). CBT is recommended by several practice guidelines for patients with IBS if lifestyle advice or pharmacotherapy has been ineffective. Manual-based CBT using interoceptive exposure (IE), which focuses on the anxiety response to abdominal symptoms, has been reported to be more effective than other types of CBT.

Investigating Multidimensional Interoceptive Awareness in a Japanese Population: Validation of the Japanese MAIA-J.

The Multidimensional Assessment of Interoceptive Awareness (MAIA) is a self-report instrument to assess relevant dimensions of bodily awareness. The aim of this study was to offer a Japanese version and adaptation of the MAIA (MAIA-J), as well as to analyse its psychometric properties in a Japanese population. The English MAIA was systematically forward and backward translated by bi-lingual Japanese experts; additionally, content validity aspects regarding language were discussed by a panel of experts.

Variations in the preproghrelin gene correlate with higher body mass index, fat mass, and body dissatisfaction in young Japanese women.

Background: Ghrelin is an endogenous peptide that stimulates growth hormone secretion, enhances appetite, and increases body weight and may play a role in eating disorders.

Objective: The purpose was to determine whether any preproghrelin gene variants are associated with anthropometric measures, circulating ghrelin, lipid concentrations, insulin resistance, or psychological measures relevant to eating disorders in young women.

Design: This cross-sectional study compared outcome measures between preproghrelin genotypes.

Age and gender effect on alexithymia in large, Japanese community and clinical samples: a cross-validation study of the Toronto Alexithymia Scale (TAS-20).

Background: The construct validity of alexithymia and its assessment using the 20-item Toronto Alexithymia Scale (TAS-20) in Japan is unknown. Low reliability has been found for the third factor of the TAS-20 in some cultures, and the factor structure for psychosomatic disorder patients has not been adequately investigated. Although alexithymia most likely has certain developmental aspects, this has infrequently been investigated.