Evidence explainerFenugreek

Fenugreek and Blood Sugar: Lower Readings in Pooled Trials, Low-Quality Evidence

Two 2023 meta-analyses found lower blood-sugar markers with fenugreek, but they disagree on how much, and NCCIH says many of the studies were not of high quality.

By Kymata Health editorial teamPublished October 9, 2026Last reviewed October 9, 2026

Medical review pending. Written by our editorial team from the studies cited below; a credentialed clinician has not reviewed it yet. Educational only, not medical advice.

Key takeaways

  • A 2023 meta-analysis of 10 trials (706 participants) in adults with type 2 diabetes or prediabetes found lower fasting glucose, 2-hour glucose and HbA1c with fenugreek [1].
  • Insulin resistance (HOMA-IR) did not change significantly in that analysis [1].
  • A second 2023 meta-analysis of 14 trials (894 participants) found only HbA1c significantly lower and named study quality and heterogeneity as concerns [2].
  • NCCIH says research suggests fenugreek may help lower blood sugar, but many of the studies were not of high quality [3].
  • NCCIH also warns that large doses may cause a harmful drop in blood sugar [3].

The evidence, graded

Pulled from our monograph evidence tables. Grades follow our evidence-grading policy.

  • Grade CWorsenedFasting and 2-hour blood sugar and HbA1cFenugreek · Meta-analysis · n=706 · 2023 · PMID 37762302Fasting blood sugar, 2-hour glucose and HbA1c fell versus control; insulin resistance (HOMA-IR) did not change significantly. No liver or kidney toxicity or severe adverse events; mild digestive side effects in some studies.
  • Grade CWorsenedBlood lipids (total and LDL cholesterol, triglycerides, HDL)Fenugreek · Meta-analysis · n=560 · 2020 · PMID 32087319Total cholesterol fell by about 9.4 mg/dL, triglycerides by 13.8 mg/dL and LDL by 6.6 mg/dL, and HDL rose by 3.5 mg/dL versus control. Body weight and BMI did not change.

What the pooled trials found

A 2023 meta-analysis pooled 10 randomized trials with 706 participants who had type 2 diabetes or prediabetes [1]. Fasting blood glucose, 2-hour glucose on an oral glucose tolerance test and HbA1c fell significantly versus control, while HOMA-IR, a measure of insulin resistance, did not [1].

A second 2023 meta-analysis of 14 trials with 894 participants found a statistically significant difference only for HbA1c (mean difference −0.88) [2]. Its confidence intervals for fasting and after-meal glucose crossed zero [2].

Neither abstract gives a single dose, form or trial length, so the pooled results cannot be tied to one product [1][2].

Why the evidence is graded low

NCCIH says there is not enough high-quality evidence to determine whether fenugreek is useful for diabetes, and that many of the blood-sugar studies were not of high quality [3]. The second meta-analysis likewise calls study quality and heterogeneity a concern and asks for rigorous double-blind trials [2].

For the full graded table, read the fenugreek monograph.

Blood lipids

A 2020 meta-analysis of 12 trials (14 arms, 560 adults) found total cholesterol about 9.4 mg/dL lower, triglycerides about 13.8 mg/dL lower, LDL about 6.6 mg/dL lower and HDL about 3.5 mg/dL higher with fenugreek; body weight and BMI did not change [4].

The 2023 analysis in people with high blood sugar also found better total cholesterol, triglycerides and HDL, but no significant difference in LDL [1].

Safety notes on blood sugar

NCCIH warns that large doses may cause a harmful drop in blood sugar, and advises anyone taking any medicine to talk with a health care provider before using fenugreek [3]. That warning matters most for people on blood-sugar-lowering medicines.

NCCIH says fenugreek is not safe during pregnancy in amounts greater than those found in food [3]. In the 10-trial meta-analysis, no liver or kidney toxicity or severe adverse events were seen, though some studies reported mild digestive side effects [1].

For the full safety picture, read fenugreek side effects.

Quick answers

Does fenugreek tea or seed lower blood sugar differently from capsules?

Our sources do not separate teas, seeds and extracts; the pooled abstracts do not break results down by form [1][2].

How long did the blood-sugar trials last?

The pooled abstracts do not report trial lengths, so our sources cannot say how quickly changes appeared [1][2].

Is fenugreek safe with blood-sugar medicines?

NCCIH warns that large doses may cause a harmful drop in blood sugar and advises talking with a health care provider before use if you take any medicine [3].

Keep reading

Full monographs

Related articles

Browse the full Supplement & Nutrient Encyclopedia or all supplement articles.

References

  1. [1]The Effect of Fenugreek in Type 2 Diabetes and Prediabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Int J Mol Sci, 2023. PMID 37762302
  2. [2]Effect of Fenugreek on Hyperglycemia: A Systematic Review and Meta-Analysis. Medicina (Kaunas), 2023. PMID 36837450
  3. [3]Fenugreek (Last Updated: February 2025). National Center for Complementary and Integrative Health (NCCIH), 2025.
  4. [4]Effect of fenugreek supplementation on blood lipids and body weight: A systematic review and meta-analysis of randomized controlled trials. J Ethnopharmacol, 2020. PMID 32087319

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