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Li H, Chen A, Zhao L, Bhagavathula AS, Amirthalingam P, Rahmani J, Salehisahlabadi A, Abdulazeem HM, Adebayo O, Yin X. Effect of tomato consumption on fasting blood glucose and lipid profiles: A systematic review and meta-analysis of randomized controlled trials. Phytother Res 2020; 34:1956-1965. [PMID: 32243013 DOI: 10.1002/ptr.6660] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 02/06/2020] [Accepted: 02/15/2020] [Indexed: 12/20/2022]
Abstract
Tomato (Solanum lycopersicum) phytochemicals, which include phytoene, phytofluene, beta-carotene, flavonoids, lycopene, and polyphenols, have been shown to improve the effects of fasting on plasma triglyceride (TG), low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), total cholesterol (TC), and fasting blood sugar (FBS). The aim of this study was to systematically evaluate the effects of Tomato TC, TG, HDL, LDL, and FBS in humans. A systematic literature search was conducted in PubMed/MEDLINE, Web of sciences, and SCOPUS databases by two researchers for studies published until August of 2019 without language and time limitations. Results were combined with random effect models. Six studies were included in this meta-analysis. Combined results reveal a significant reduction in cholesterol (weighted mean difference [WMD]: -4.39 mg/dl, 95% CI: -7.09, -1.68, I2 = % 48, p heterogeneity: .05), TG (WMD: -3.94 mg/dl, 95% CI: -7.67, -0.21, I2 = % 90, p heterogeneity: .001), LDL levels (WMD: -2.09 mg/dl, 95% CI: -3.73, -0.81, I2 = % 78, p heterogeneity: .001), and increasing in HDL levels (WMD: 2.25 mg/dl, 95% CI: 0.41, 4.10, I2 = % 97, p heterogeneity: .001). Tomato was found to have a higher reduction effect on TG and LDL in younger participants. While pooled results indicate no significant effect on FBS levels (WMD: 0.59 mg/dl, 95% CI: -0.28, 1.46, I2 = % 95, p heterogeneity: .001). In conclusion, the results indicate a significant reduction in total cholesterol, TG, and LDL and increase in HDL levels that is caused by tomato consumption.
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Affiliation(s)
- Hao Li
- Department of Endocrinology, Shandong Provincial Third Hospital, Shandong University, Jinan City, Shandong Province, China
| | - Airong Chen
- Health Management Center, Qingdao Municipal Hospital, Qingdao, Shandong Province, China
| | - Li Zhao
- Department of Pediatrics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Akshaya S Bhagavathula
- Department of Internal Medicine, College of Medicine and Health Sciences, UAE University, Al Ain, UAE
| | | | - Jamal Rahmani
- Department of Community Nutrition, Student Research Committee, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ammar Salehisahlabadi
- Department of Community Nutrition, Student Research Committee, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Oladimeji Adebayo
- Department of Medicine, University College Hospital, Ibadan, Nigeria
| | - Xiao Yin
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan City, Shandong Province, China
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