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減重可有效改善乾癬患者病情及生活品質

JEADV 論文摘要:減重介入對乾癬嚴重度的統合分析

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

Impact of weight-loss interventions on psoriasis severity: A systematic review and meta-analysis(外部網站)

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。

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