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How lifestyle factors and their associated pathogenetic mechanisms impact psoriasis

Madden, SK, Flanagan, KL and Jones, G ORCID: 0000-0002-9814-0006 2019 , 'How lifestyle factors and their associated pathogenetic mechanisms impact psoriasis' , Clinical Nutrition , doi: 10.1016/j.clnu.2019.05.006.

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Abstract

Backgrounds and aims:Psoriasis is a skin disorder affecting approximately 2-3% of the global population. While research has revealed a strong genetic component, there are few studies exploring the extent to which lifestyle factors influence psoriasis pathogenesis. The aim of this review was to describe the role of lifestyle factors as both a potential cause and treatment for psoriasis. The review also examines the underlying mechanisms through which these lifestyle factors may operate.Methods:This narrative review aims to incorporate current knowledge relating to both lifestyle and pathogenetic factors that contribute to and alleviate psoriasis presentation. Studies reporting the effect of an inflammatory diet and potential dietary benefits are reported, as well as insights into the effects of stress, smoking and alcohol, insulin resistance and exercise.Results:Poor nutrition and low Omega 3 fatty acid intake, likely combined with fat malabsorption caused by gut dysbiosis and systemic inflammation, are associated with psoriasis. The data strongly suggest that improvements to disease severity can be made through dietary and lifestyle interventions and increased physical activity. Less conclusive, although worthy of mention, is the beneficial effect of bile acid supplementation.Conclusions:Lifestyle interventions are a promising treatment for psoriasis and its associated co-morbidities. However, gaps and inadequacies exist within the literature, e.g. methodology, absence of a unified scoring system, lack of controlled clinical data and lack of studies without simultaneous usage of biologics or alternative therapies. Future directions should focus on high quality cohort studies and clinical trials.

Item Type: Article
Authors/Creators:Madden, SK and Flanagan, KL and Jones, G
Keywords: Psoriasis, stress, microbiota, nutrition, inflammation, lifestyle
Journal or Publication Title: Clinical Nutrition
Publisher: Churchill Livingstone
ISSN: 0261-5614
DOI / ID Number: 10.1016/j.clnu.2019.05.006
Copyright Information:

Copyright 2019 Elsevier Ltd. and European Society for Clinical Nutrition and Metabolism

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