Exogenous Ketones and blood glucose

What 3 graded rows on exogenous ketones agree on for blood glucose, and where they differ. Counted side by side, never averaged.

Consensus finder Rows from the Exogenous Ketones page, reviewed Oct 21, 2026 How it decides

What the rows agree on

Each block and row is one graded row from the Exogenous Ketones page, with its PubMed record.

Supplement

Exogenous Ketones Choose another

3 rows · 610 people

They agree: all 3 rows found an improvement.

No difference

Improved

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

From the rows

The best-graded row, grade C, is a meta-analysis of 586 people (2022) and found an improvement.

The rows run from 10 to 586 people, published from 2021 to 2024: 1 pooled review and 2 single studies.

3 improved

Grade CBlood glucose after a ketone drink · Improved
Meta-analysis, 43 studies · n 586 · 2022 · 43 trials in healthy people, athletes and people with metabolic conditions
Varied; mostly single doses · Mostly single doses
Compared with placebo, ketone drinks raised blood BHB by about 2 mmol/L and lowered blood glucose by 0.47 mmol/L; effects were larger with monoesters than salts. Evidence on longer use was limited.
Row on the Exogenous Ketones page · PubMed 35380602 (opens PubMed)
Grade DGlucose control and blood vessel function · Improved
Crossover RCT · n 14 · 2021 · Adults with obesity (mean age 56)
12 g BHB 15 minutes before each meal · 14 days
Average 24-hour glucose fell 7.8% and after-meal glucose 8.0% versus placebo; brachial artery flow-mediated dilation rose from 6.2% to 8.9%. The drink was well tolerated.
Row on the Exogenous Ketones page · PubMed 33367782 (opens PubMed)
Grade DBlood glucose after a meal in type 2 diabetes · Improved
Crossover RCT · n 10 · 2024 · Adults with type 2 diabetes (mean HbA1c 7.1%)
Dose not stated in the abstract · Single dose
Glucose was about 18% lower 2 hours and 12% lower 4 hours after the meal, mainly because glucose entered the blood more slowly; insulin did not differ, and no adverse effects were seen.
Row on the Exogenous Ketones page · PubMed 38483543 (opens PubMed)