クローン病の管理に有望な食事療法が研究で明らかに(Study reveals promising diet for managing Crohn’s disease)

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2026-01-13  スタンフォード大学

スタンフォード大学の研究チームは、クローン病患者の症状緩和に食事内容が大きく影響することを示す研究結果を発表した。本研究では、炎症性腸疾患(IBD)の一種であるクローン病患者を対象に、動物性食品を減らし、野菜・果物・全粒穀物を中心とした食事と、より一般的な食事内容を比較した。その結果、特定の食事療法を実践した患者では腸内炎症の指標が低下し、腹痛や下痢などの症状が有意に改善することが確認された。薬物治療に加えて食事介入を行うことで、腸内細菌叢のバランスが改善し、免疫反応が抑制される可能性が示唆されている。研究者らは、個々の患者に合わせた栄養戦略が、クローン病の長期管理と生活の質向上に重要な役割を果たすと指摘している。

クローン病の管理に有望な食事療法が研究で明らかに(Study reveals promising diet for managing Crohn’s disease)
Participants in the study ate plant-based meals during the fasting period of the trial instead of their usual diet. | Getty Images

<関連情報>

軽度から中等度のクローン病患者における断食模倣食:ランダム化比較試験 A fasting-mimicking diet in patients with mild-to-moderate Crohn’s disease: a randomized controlled trial

C. Kulkarni,T. Fardeen,J. Gubatan,J. Ye,K. Jarr,E. Dickson,H. Jang,M. Temby,A. Patel,Y. Jiang,G. Singh,K. Keyashian,S. Streett,E. Ho,G. Barber,S. Singh,D. Limsui,N. Anaizi,L. Becker,S. P. Spencer,D. Mehrish,D. Perelman,V. D. Longo,V. Charu,… S. R. Sinha
Nature Medicine  Published:13 January 2026
DOI:https://doi.org/10.1038/s41591-025-04173-w

Abstract

In healthy individuals, short cycles of a fasting-mimicking diet (FMD) decrease systemic inflammatory markers and improve metabolic health. Potential benefits of FMD have not been investigated in Crohn’s disease (CD). We conducted an open-label, randomized, controlled trial to assess the effects of FMD in adults with mild-to-moderate CD. Patients in the FMD group followed an FMD for five consecutive days per month for three consecutive months, returning to their regular baseline diet on non-FMD days. Control participants continued their baseline diet. The primary outcome of clinical response was a reduction in CD Activity Index (CDAI) of at least 70 points or CDAI of ≤150 after the third 5-day diet cycle. Forty-five patients in the FMD group (69.2%) and 14 patients in the control group (43.8%) met the primary outcome of clinical response (P = 0.03). Forty-two patients in the FMD group (64.6%) and 12 patients in the control group (37.5%) achieved the secondary outcome of clinical remission (P = 0.02). There was also a decline from baseline in fecal calprotectin (an inflammatory marker) in the FMD group compared with the control group (-22.0% versus 8.0%, P = 0.03). Exploratory analyses of plasma metabolites and peripheral blood mononuclear cell gene expression revealed post-FMD decreases in key inflammatory lipid mediators and immune-effector transcripts, concordant with reduced CD activity. Together, these findings demonstrate that FMD is superior to a baseline diet for inducing clinical response, clinical remission and biochemical improvement in mild-to-moderate CD, and support further investigation of FMD as an adjunctive therapy for chronic inflammatory diseases. ClinicalTrials.gov registration: NCT04147585.

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