Lycopene supplement and blood pressure: an updated meta-analysis of intervention trials.

TitleLycopene supplement and blood pressure: an updated meta-analysis of intervention trials.
Publication TypeJournal Article
Year of Publication2013
AuthorsLi X, Xu J
JournalNutrients
Volume5
Issue9
Pagination3696-712
Date Published2013 Sep
Abstract

Epidemiological studies suggested that lycopene supplement could decrease blood pressure, but the results were conflicting. We conducted an updated meta-analysis by screening PubMed databases, and calculated the combined effect size using a random effect model. In addition, subgroup analysis stratified by baseline blood pressure, lycopene dosage, duration, study location and the funding support of the paper was also conducted. Six studies met our inclusion criteria, and the pooled analysis demonstrated a significant reduction of systolic blood pressure (SBP) (mean SBP = -4.953 [-8.820, -1.086], p = 0.012) with obvious heterogeneity (p = 0.034, I2 = 58.5%). Subgroup analysis results showed that higher dosage of lycopene supplement (>12 mg/day) could lower SBP more significantly, especially for participants with baseline SBP >120 mmHg, or Asians, while lycopene intervention had no statistical effect on diastolic blood pressure (DBP) (mean DBP = -3.809 [-8.177, 0.560], p = 0.087), and obvious heterogeneity was also observed (p = 0.074, I2 = 53.1%). Our present study suggests that lycopene supplement >12 mg/day might effectively decrease SBP, particularly among Asians or population with higher baseline SBP.

DOI10.1007/s11033-013-2762-5
Alternate JournalNutrients