Dietary Fiber Is Beneficial for the Prevention of Cardiovascular Disease: An Umbrella Review of Meta-analyses

Table 6

Effects of Increased Fiber Intake on Blood Pressure

Meta-analysis Authors, Year	No. of Studies in Meta-analysis	No. of Participants in Meta-analysis	Fiber Dose (Average Amount per Day)	Mean Duration (wks)	Main Findings of Meta-analysis	Q Test P Value	I² Statistic	Egger or Begg Test P Value	Quality Assessment and Outcome
Streppel et al, 2005⁴⁹	24	1404	11.5 g	9	SBP ↓ 1.13 mmHg, NS DBP ↓ 1.26 mmHg, NS				Yes NR

Whelton et al, 2005⁵⁰	21	1477	11 g	8	SBP ↓ 1.15 mmHg, NS DBP ↓ 1.65 mmHg, P < .005	P < .05 P < .05	NR NR	NS NS

Evans et al, 2015⁵¹	18	1333	6 g	NR	SBP ↓ 0.92 mm Hg, NS DBP ↓ 0.71 mm Hg, NS	P = .023 P = .001	43% 58%	NS NS	Cochrane NR

Hartley et al, 2016³³	10	661	NR	12	SBP ↓ 1.92 mm Hg, NS DBP ↓ 1.77 mm Hg, P = .000	P = .001 NS	69% 7%

DBP, diastolic blood pressure; NR, not reported; NS, not significant; SBP, systolic blood pressure.