Hadis Gerami - Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Atie Sadat Khorasanian - Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
Azadeh Lesani - Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran

Psoriasis is an autoimmune skin disease known for inflammation and hyper-proliferation of epidermal keratinocytes (Luo et al., ۲۰۲۰). ۲-۳% of the population suffer from psoriasis (Parisi et al., ۲۰۱۳). Emotional distress in psoriasis patients impairs quality of their life. Moreover, they suffer from the burden of comorbidities like obesity, diabetes mellitus, metabolic syndrome (Armstrong et al., ۲۰۱۳b), and hypertension (Armstrong et al., ۲۰۱۳a) through the increase in psoriasis severity. The pathogenesis of psoriasis is not well understood yet. It is concluded from the interactions between genetic predisposition and the environmental risk factors, such as diet, alcohol consumption, stress, obesity, and smoking (Ricketts et al., ۲۰۱۰). One pathogenesis of psoriasis is amplifying T-cells and dendritic cells from the immune system, which releases various pro-inflammatory cytokines and chemokines with simultaneous activation of growth factors (Al-Harbi et al., ۲۰۲۰). Moreover, oxidative stress and reactive oxygen species (ROS) production causes inflammation (Wacewicz et al., ۲۰۱۷). High free radicals have harmful effects through structural changes on proteins, lipids, and nucleic acids. The increase in oxidants leads to active antioxidant defense mechanisms (Lobo et al., ۲۰۱۰). Corresponding Author:Azadeh Lesani View Orcid in Profile You can search for this author in PubMed     Google Scholar Profile