Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany.
Schoen Clinic Roseneck, Prien am Chiemsee, Germany.
Int J Eat Disord. 2020 May;53(5):537-540. doi: 10.1002/eat.23244. Epub 2020 Feb 10.
In the general population, body weight is-on average-higher in the winter than in the summer. In patients with anorexia nervosa (AN), however, the opposite pattern has been reported. Yet, only a handful of studies exist to date that suffer from small sample sizes and inconsistent results. Therefore, the current study examined seasonal effects on body weight in a large sample of patients with AN to dissolve previous inconsistencies.
Clinical records of N = 606 inpatients (95.4% female) who received AN treatment at the Schoen Clinic Roseneck (Prien am Chiemsee, Germany) between 2014 and 2019 were analyzed.
Patients with restrictive type AN had lower body mass index at admission in the winter than in the summer. This difference was not found for patients with binge/purge type AN and patients with atypical AN.
Individuals with restrictive type AN show seasonal variations in body weight that are opposite to seasonal variations in body weight in individuals without AN. These seasonal effects are specific to the restrictive subtype and cannot be found for the binge/purge or atypical subtypes. Future studies that replicate this effect in other cultures or latitudes and that examine the mediating mechanisms are needed.
在普通人群中，体重平均而言在冬季比夏季高。然而，在神经性厌食症（AN）患者中，却报告了相反的模式。然而，迄今为止，只有少数研究存在样本量小和结果不一致的问题。因此，本研究在大量 AN 患者中检查了季节对体重的影响，以消除先前的不一致。
分析了 2014 年至 2019 年间在德国 Prien am Chiemsee 的 Schoen Clinic Roseneck 接受 AN 治疗的 606 名住院患者（95.4%为女性）的临床记录。
限制型 AN 患者冬季入院时的体重指数低于夏季。对于暴食/清除型 AN 患者和非典型 AN 患者，这种差异并不存在。
限制型 AN 患者的体重表现出与非 AN 患者体重相反的季节性变化。这些季节性影响是限制型亚型特有的，不能在暴食/清除或非典型亚型中发现。需要在其他文化或纬度复制这种效果并检查中介机制的未来研究。
