Black currant (blackcurrant) and blood sugar

What 2 graded rows on black currant (blackcurrant) agree on for blood sugar, and where they differ. Counted side by side, never averaged.

Consensus finder Rows from the Black currant (blackcurrant) page, reviewed Oct 21, 2026 How it decides

What the rows agree on

Each block and row is one graded row from the Black currant (blackcurrant) page, with its PubMed record.

Supplement

Black currant (blackcurrant) Choose another

2 rows · 36 people

Split. 1 row found an improvement and 1 had mixed results.

Mixed

Improved

Each block is one evidence row, sized by how many people it enrolled, with its grade inside. Outlined: mixed results.

From the rows

The best-graded row, grade C, is a crossover trial of 23 people (2016) and reported mixed results.

The rows run from 13 to 23 people, published from 2016 to 2021: 2 single studies.

1 improved · 1 mixed

Grade DInsulin sensitivity and post-meal glucose in overweight adults · Improved
RCT · n 13 · 2021 · Sedentary adults with overweight or obesity (UK)
600 mg/day · 8 days
Insulin sensitivity improved 22% and C-reactive protein fell versus placebo, and free-living post-meal glucose after breakfast and lunch was 9% and 8% lower. In a separate group of 12, a single 600 mg dose did not change post-meal glucose.
Row on the Black currant (blackcurrant) page · PubMed 32648022 (opens PubMed)
Grade CPost-meal glucose, insulin and incretins · Mixed
Crossover RCT · n 23 · 2016 · Men and postmenopausal women (mean age 46)
Single drink · Acute (2 hours)
Only the 600 mg anthocyanin drink reduced early plasma glucose (area over baseline 0 to 30 min -0.34 mmol/L.h, P < .005) and insulin, and lowered GIP. The 150 and 300 mg drinks did not differ from control; oxidative stress and vascular function did not change.
Row on the Black currant (blackcurrant) page · PubMed 27764725 (opens PubMed)