The effect of almonds consumption on blood pressure: A systematic review and dose-response meta-analysis of randomized control trials.

• Date posted:  03/16/2020 
• Posted In:
• Almonds,
• Cardiovascular Health,

Li, Z., A.S. Bhagavathula, M. Batavia, C. Clark, H.M. Abdulazeem, J. Rahmani, F. Yin, 2020. The effect of almonds consumption on blood pressure: A systematic review and dose-response meta-analysis of randomized control trials. 32(2):1757-1763.

Almond is rich in antioxidants and phytochemicals such as methylquercetin, protocatechuic acid, catechin, flavonoids, p-hydroxybenzoic acid, resveratrol, vanillic acid, and kaempferol. The aim of the present study was to systematically review and dose-response meta-analyses the effects of almond consumption on systolic and diastolic blood pressure (SBP/DBP), respectively, in Randomized Controlled Trials (RCTs). A systematic search was performed in PubMed/MEDLINE, web of sciences and SCOPUS by 2 researchers, independently to identify randomised controlled trials up to July 2019. There were no time or language restrictions. PRISMA guidelines were followed in conducting this meta-analysis. Fifteen studies with 21 arms, containing 853 participants, reported SBP as an outcome measure. Pooled results showed significant reduction in SBP (WMD: -0.90 mmHg, 95% CI: -1.74, -0.06, P_{heterogeneity} = 0.94) by almond intervention. There is no significant effect from almond consumption on DBP (WMD: 0.67 mmHg, 95% CI: -1.93, 0.60, P_{heterogeneity} = 0.001). Meta-regression analysis showed dose of used almond (g/d) as source of heterogeneity between results of DBP. In conclusion results of this meta-analysis showed reduce effect of almonds on systolic blood pressure.