Ecklonia cava (brown seaweed polyphenols) and blood glucose
What 2 graded rows on ecklonia cava (brown seaweed polyphenols) agree on for blood glucose, and where they differ. Counted side by side, never averaged.
Consensus finder Rows from the Ecklonia cava (brown seaweed polyphenols) page, reviewed Oct 21, 2026 How it decides
What the rows agree on
Each block and row is one graded row from the Ecklonia cava (brown seaweed polyphenols) page, with its PubMed record.
Your question
Ecklonia cava (brown seaweed polyphenols) and blood glucose
2 rows · 100 peopleSplit. 1 row found an improvement and 1 had mixed results.
- CGrade C× 1
- DGrade D× 1
- Rows
- 2
- Trials
- 2
- People
- 100
What the rows share
From the rowsThe best-graded row, grade C, is a randomized trial of 80 people (2015) and found an improvement.
The rows run from 20 to 80 people, published from 2015 to 2023: 2 single studies.
The rows
1 improved · 1 mixed- CGrade CAfter-meal glucose in prediabetes · Improved
RCT · n 80 · 2015 · Adults with prediabetes
1,500 mg/day · 12 weeks
Post-meal glucose fell significantly versus placebo. Insulin and C-peptide fell within the extract group but did not differ significantly from placebo. No significant adverse events.
Row on the Ecklonia cava (brown seaweed polyphenols) page · PubMed 25608849 (opens PubMed)
- DGrade DGlucose after a 75 g carbohydrate load · Mixed
RCT · n 20 · 2023 · Adults with prediabetes in Saudi Arabia
600 mg, single dose · Single dose (2-hour test)
Glucose was lower than placebo at 90 and 120 minutes (108.1 vs 122.2 and 101.3 vs 112.9 mg/dL) but not at 30 or 60 minutes, and the overall glucose area under the curve and insulin did not differ.
Row on the Ecklonia cava (brown seaweed polyphenols) page · PubMed 36789057 (opens PubMed)