Nowadays, we can see a growing knowledge about lifestyle status effects on health (Arakawa, 2018). Blood pressure and anthropometric indices such as body weight (BW) are the most popular factors that have effects on human health (Arakawa, 2018, Usmanov et al., 2022). High blood pressure can lead to major cardiovascular diseases such as stroke, coronary artery disease, and sudden death (Flegal et al., 2013, Monge et al., 2018), and high blood pressure could be a major outcome for obesity (Usmanov et al., 2022). People with normal body mass index (BMI) show lower cardiovascular problems than those with greater BMI (Flegal et al., 2013, McGill et al., 2002). There is a notifiable association between obesity and blood pressure (Adegoke et al., 2021). Anthropometric indices such as BW, BMI, and waist circumference can be measured to determine obesity and adiposity (Bombelli et al., 2011, Hirani et al., 2008, Whaley-Connell and Sowers, 2011).

Diet has a major role in developing and preventing cardiovascular diseases (Asbaghi et al., 2021c, Asbaghi et al., 2021a, Asbaghi et al., 2020, Asbaghi et al., 2021b, Medina-Remón et al., 2018, Naseri et al., 2022). Increases in atherogenicity could be related to lower intake in omega three fatty acids and higher intake of omega six fatty acids that elevated fatty acid ratio (Saini and Keum, 2018).

Portulaca oleracea known as purslane has high nutritional values, which can be used as diuretic, antiseptic, antioxidant, anti-inflammatory, and antihypertensive agent (Jafari et al., 2023a, Jafari et al., 2023b). Purslane is a rich source of omega three fatty acids, glutathione, carotene, phenolic components, flavonoids, amino acids, polysaccharides, tocopherol, B complex vitamins, active biologic compounds such as dopamine, noradrenaline, and some minerals (Gheflati et al., 2019, Ghorbanian et al., 2019, PARVIN et al., 2013).

As mentioned above, purslane has beneficial effects on helping total antioxidant capacity, lowering free radicals (Liu et al., 2000, Yang et al., 2009), and treating various cardiovascular diseases (Bedakhanian M, 2017). There was no prior systematic review and dose-response meta-analysis investigating the effects of purslane on blood pressure and anthropometric indices. Therefore, this study was conducted to evaluate the evidence related to purslane consumption on blood pressure and anthropometric indices.