減重可有效改善乾癬患者病情及生活品質
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全球乾癬患者中,有 80% 同時有過重或肥胖。
先前整理過減重有助於改善乾癬的 JAMA Dermatology 研究,這篇統合分析則一次整理了 13 個隨機試驗、1,145 位患者。
這些減重方式多數是飲食調整,部分加上運動,另有 3 個試驗使用減重藥物。
平均多減 6.7 公斤,乾癬嚴重度明顯下降,嚴重度分數(PASI)改善 75% 以上的機會是對照組的 1.6 倍,生活品質也跟著改善。
作者的結論是:減重應該納入乾癬的常規治療。
我在 2021 年《皮膚大解密》的書評中也整理過:減重可以明顯改善乾癬,因為肥胖會讓人體處於發炎的狀態。
門診也曾叮囑一位乾癬數年、外用超強類固醇的患者:健康飲食與減重可以有效改善乾癬。
乾癬,需要的不只是處理皮膚。
本篇研究,“Impact of weight-loss interventions on psoriasis severity: A systematic review and meta-analysis”,期刊摘要如下:
Background:
Psoriasis affects at least 60 million people worldwide, and 80% also live with overweight or obesity. Excess weight increases susceptibility to psoriasis and is associated with more severe disease.
Objectives:
To evaluate the impact of weight-loss interventions on psoriasis severity (Psoriasis Area and Severity Index [PASI], PASI50, PASI75, PASI100 [50%/75%/100% reduction in baseline PASI, respectively]) and quality of life (Dermatology Life Quality Index [DLQI]).
Methods:
We systematically searched five databases and two trial registries (inception to 03/09/2025). Outcomes were informed by patient focus-group discussions. Randomized controlled trials (RCTs) in adults with psoriasis, comparing any weight-loss intervention versus usual care or a lower-intensity weight-loss intervention, were included. Studies had to report a change in weight and ≥1 psoriasis severity or quality-of-life measure. Random effects meta-analyses were used.
Results:
Thirteen RCTs (1145 participants) with 14 comparisons were included. Eleven interventions advised dietary changes, of which four included physical activity. Three used weight-loss medications. Across 14 comparisons (n = 1145, mean difference (MD) in weight change: -6.7 kg), weight-loss interventions produced a greater reduction in PASI versus control: MD -2.5 (95%CI: -3.8 to -1.1, I2 = 85.2%). We found a significant effect of weight-loss interventions on the likelihood of achieving PASI75 (RR = 1.6, 95%CI: 1.1-2.2, I2 = 22.6% [based on six comparisons, n = 681, MD in weight change: -7.3 kg]). There was no statistically significant effect of the interventions on the likelihood of achieving PASI50 (RR = 1.5, 95%CI: 0.9-2.4, I2 = 72.8% [based on four comparisons, n = 509, MD in weight change: -4.0 kg]) or PASI100 (RR = 1.6, 95%CI: 0.3-9.7, I2 = 0.0% [based on two comparisons, n = 334, MD in weight change: -5.2 kg]), but both analyses were limited by few studies. Across seven comparisons (n = 364; MD in weight change -7.8 kg), weight-loss interventions were associated with a significant improvement in DLQI compared to control: MD -5.0 (95%CI: -9.7 to -0.3, I2 = 96.0%).
Conclusions:
High-certainty evidence suggests weight-loss interventions can improve psoriasis severity and quality of life, and should be considered as part of routine treatment.
原始論文
Morrow S, Hawkins P, Griffiths CEM, et al. Journal of the European Academy of Dermatology and Venereology. 2026;40(6):980-993. doi:10.1111/jdv.70247
本文摘要依 CC BY 4.0 授權轉載,著作權屬原作者。
論文摘要(中文翻譯)
以下為中文翻譯,僅供參考,內容以英文原文為準。
減重介入對乾癬嚴重度的影響:系統性回顧與統合分析
背景:全球至少有 6000 萬人受乾癬影響,其中 80% 同時有過重或肥胖。體重過重會增加罹患乾癬的機會,也與較嚴重的病情有關。
目的:評估減重介入對乾癬嚴重度(乾癬面積與嚴重度指數 PASI,以及 PASI50、PASI75、PASI100,分別代表較治療前改善 50%、75%、100%)與生活品質(皮膚病生活品質指數 DLQI)的影響。
方法:系統性搜尋 5 個資料庫與 2 個試驗登錄平台(從建置起至 2025 年 9 月 3 日)。評估的結果指標參考了患者焦點團體討論的意見。納入對象為成人乾癬患者的隨機對照試驗,比較任何減重介入與一般照護或較低強度的減重介入。研究必須報告體重變化,以及至少 1 項乾癬嚴重度或生活品質指標。以隨機效應模型進行統合分析。
結果:共納入 13 個隨機對照試驗(1145 位參與者),包含 14 組比較。其中 11 個介入是建議改變飲食,4 個同時包含運動;3 個使用減重藥物。在 14 組比較中(1145 人,體重變化平均差 −6.7 公斤),減重介入使 PASI 下降的幅度比對照組大:平均差 −2.5(95% 信賴區間 −3.8 至 −1.1,I² = 85.2%)。減重介入明顯提高達到 PASI75 的機會(相對風險 1.6,95% CI 1.1–2.2,I² = 22.6%[根據 6 組比較,681 人,體重變化平均差 −7.3 公斤])。對達到 PASI50(相對風險 1.5,95% CI 0.9–2.4,I² = 72.8%[4 組比較,509 人,體重變化平均差 −4.0 公斤])或 PASI100(相對風險 1.6,95% CI 0.3–9.7,I² = 0.0%[2 組比較,334 人,體重變化平均差 −5.2 公斤])則沒有統計上的顯著效果,但這兩項分析都受限於研究數量少。在 7 組比較中(364 人,體重變化平均差 −7.8 公斤),減重介入與 DLQI 明顯改善有關:平均差 −5.0(95% CI −9.7 至 −0.3,I² = 96.0%)。
結論:高確定性的證據顯示,減重介入可以改善乾癬嚴重度與生活品質,應考慮納入常規治療。