| Title: | Adding salt to foods and risk of psoriasis: A prospective cohort study |
| Journal: | Journal of Autoimmunity |
| Published: | 1 Jun 2024 |
| Pubmed: | https://pubmed.ncbi.nlm.nih.gov/38823158/ |
| DOI: | https://doi.org/10.1016/j.jaut.2024.103259 |
Publication 11945
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Abstract
BACKGROUND: High salt intake may play a critical role in the etiology of psoriasis. Yet, evidence on the association of high salt intake with risk of psoriasis is limited.</p>
OBJECTIVE: To estimate the association between frequency of adding salt to foods and risk of psoriasis.</p>
METHODS: We conducted a prospective cohort study of 433,788 participants from the UK Biobank. Hazard ratios (HRs) and their 95 % confidence intervals (CIs) for risk of psoriasis in relation to frequency of adding salt to foods were estimated using multivariable Cox proportional hazards models. We further evaluated the joint association of adding salt to foods and genetic susceptibility with risk of psoriasis. We conducted a mediation analysis to assess how much of the effect of adding salt to foods on risk of psoriasis was mediated through several selected mediators.</p>
RESULTS: During a median of 14.0 years of follow-up, 4279 incident cases of psoriasis were identified. In the multivariable-adjusted model, a higher frequency of adding salt to foods was significantly associated with an increased risk of psoriasis ("always" versus "never/rarely" adding salt to foods, HR = 1.25, 95 % CI: 1.10, 1.41). The observed positive association was generally similar across subgroups. In the joint association analysis, we observed that participants with a high genetic risk (above the second tertile) and the highest frequency of adding salt to foods experienced 149 % higher risk of psoriasis, when compared with participants with a low genetic risk (below the first tertile) and the lowest frequency of adding salt to foods (HR = 2.49, 95 % CI: 2.05, 3.02). Mediation analysis revealed that 1.8 %-3.2 % of the positive association between frequency of adding salt and risk of psoriasis was statistically significantly mediated by obesity and inflammatory biomarkers such as C-reactive protein and systemic immune-inflammation index (all P values < 0.004).</p>
CONCLUSIONS: Our study demonstrated a positive association between frequency of adding salt to foods and risk of psoriasis. The positive association was independent of multiple other risk factors, and may be partially mediated through obesity and inflammation.</p>
15 Keywords
- Adult
- Aged
- Female
- Follow-Up Studies
- Genetic Predisposition to Disease
- Humans
- Incidence
- Male
- Middle Aged
- Proportional Hazards Models
- Prospective Studies
- Psoriasis
- Risk Factors
- Sodium Chloride, Dietary
- United Kingdom
7 Authors
- Guowei Zhou
- Lu Gan
- Bin Zhao
- Fang Fang
- Hong Liu
- Xiang Chen
- Jiaqi Huang
2 Applications
| Application ID | Title |
|---|---|
| 55257 | Association of melanoma and non-melanoma skin cancers with the interaction between lifestyle and genetic factors |
| 98583 | Associations of environmental and metabolic risk factors, and the interactions with genetic susceptibility loci with Risk of COVID-19, Chronic Disease and Mortality |
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