Meta-analysis2019 · Lancet · Reynolds A et al.
Fibre and health: 185 cohorts and 58 RCTs
Who, how long
135 million person-years of observation + 4,635 RCT participants
What they found
Highest fibre intake: –15–30% all-cause mortality, cardiovascular death, type 2 diabetes and colorectal cancer; RCTs showed lower weight, blood pressure and cholesterol.
⚠ Caveat
The dose-response keeps rising beyond 25–29 g/day; most Europeans eat 15–20 g.
Related in the knowledge base
Last reviewed: 6 September 2026
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