School of Life and Medical Sciences, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK.
Department of Sport, Health Sciences and Social Work, Oxford Brookes University, Headington Rd, Headington, Oxford, OX3 0BP, UK.
Nutr Res Rev. 2024 Dec;37(2):296-330. doi: 10.1017/S0954422423000185. Epub 2023 Sep 20.
Psoriasis is a chronic, systemic, immune-mediated, inflammatory skin disease associated with significant comorbidities. Globally, there are an estimated 60 million people living with psoriasis (PLwP). There is a growing body of evidence on the role of diet in psoriasis management, and demand for dietary advice is high. However, there are no specific, evidence-based dietary guidelines. This scoping review summarises the literature on use and effectiveness of diet in the management of psoriasis to improve understanding of the evidence and assist PLwP and healthcare professionals (HCPs) to discuss diet. The findings were categorised into three themes: (1) dietary intakes of PLwP, (2) the perceived role of diet in psoriasis management and (3) dietary approaches to manage psoriasis symptoms. In cross-sectional studies PLwP were reported to have higher fat and lower fibre intakes compared with controls, and lower psoriasis severity was associated with higher fibre intake. However, research is limited. PLwP perceive diet to have an impact on symptoms and make dietary modifications which are often restrictive. Systematic reviews and RCTs found certain dietary approaches improved symptoms, but only in specific populations (e.g. PLwP with obesity and PLwP with coeliac disease), and evidence for supplement use is inconclusive. The grey literature provides limited guidance to PLwP; focusing on weight loss and associated comorbidities. Larger, controlled trials are required to determine dietary approaches for psoriasis management, especially in PLwP without obesity and non-coeliac PLwP. Further understanding of diet modification, information acquisition and experiences among PLwP will enhance holistic care for psoriasis management.
银屑病是一种慢性、全身性、免疫介导的炎症性皮肤病，与多种合并症相关。全球估计有 6000 万人患有银屑病（PLwP）。越来越多的证据表明饮食在银屑病管理中的作用，对饮食建议的需求很高。然而，没有具体的、基于证据的饮食指南。本范围综述总结了饮食在银屑病管理中的应用和有效性的文献，以提高对证据的理解，并帮助 PLwP 和医疗保健专业人员（HCPs）讨论饮食。研究结果分为三个主题：（1）PLwP 的饮食摄入量，（2）饮食在银屑病管理中的感知作用，（3）管理银屑病症状的饮食方法。在横断面研究中，与对照组相比，PLwP 报告的脂肪摄入量较高，纤维摄入量较低，而银屑病严重程度较低与纤维摄入量较高相关。然而，研究有限。PLwP 认为饮食对症状有影响，并进行饮食调整，这些调整通常是限制性的。系统评价和 RCT 发现某些饮食方法可以改善症状，但仅在特定人群中（例如肥胖的 PLwP 和患有乳糜泻的 PLwP），补充剂的使用证据尚无定论。灰色文献仅为 PLwP 提供了有限的指导；重点是减肥和相关合并症。需要更大规模的对照试验来确定银屑病管理的饮食方法，尤其是在没有肥胖和非乳糜泻的 PLwP 中。进一步了解 PLwP 的饮食改变、信息获取和经验将增强银屑病管理的整体护理。
