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Open WellbeingWhat the studies actually measured

Blood sugar and insulin

Myo-inositoland HOMA-IR

Two sources here, and they say different things: one measured lower HOMA-IR and one found no clear difference.

How sure anyone can be

Low certainty, level 2 of 4

Further research is likely to change this.

The most certain of the two findings here; each record carries its own.

The numbers reported

One source’s range, drawn against its own line of no difference and scaled to its own numbers.

-1.58-1.21-0.85

This range stays on one side of the no-difference line.

Bar the confidence interval — the range the true effect is likely to sit inNotch the number the source reportedLine where there would be no difference at all

Two sources, newest first

We do not pick between these or average them into one number.

What we read is the published abstract, not the full paper, so a blank below may still be printed in the paper itself. A fixed rule worked this out from the source’s own fields. Nobody checked this rating by hand.

  • Systematic review, 2025

    Very low certainty, level 1 of 4

    Inositol supplementation efficacy in improving key cardiometabolic and anthropometric indices: a GRADE-assessed systematic review and meta-analysis of randomized controlled trials.

    Diabetol Metab Syndr. 2025;17(1):411. doi:10.1186/s13098-025-01980-6. PMID:41163174.

    Number reported
    -1.21
    Which way it went
    Lower
    Likely range
    -1.58 to -0.85
    Source’s own words
    HOMA-IR units, weighted mean difference vs control
    Who was studied
    Adult
    Compared with
    placebo or control
    Amount taken
    Not in the abstract
    For how long
    28 days (upper bound: Not in the abstract)
    Disagreement between studies
    I2 = 85.0%
    Kind of record
    Journal article
    How this rating was reachedstarts at High, 3 steps down: risk of bias, imprecision and inconsistency
    1. Starts at High
    2. Risk of bias brought it down to Moderatethe abstract's own appraisal reports serious study limitationsReported in the abstract
    3. Imprecision brought it down to Lowthe abstract does not state how many participants were pooledNot in the abstract
    4. Inconsistency brought it down to Very lowheterogeneity across pooled studies is high (I² = 85%)Reported in the abstract
    5. Ends at Very low3 steps down.
    Checked, nothing to step it down for
    indirectness

    Imprecision stops at the first check that applies; others may apply too.

    AI-reviewed & signed — an AI agent re-read this finding against the saved source and checked that the quote, the numbers, the units and the direction match it. No person read it. The owner authorised the agent to sign the batch with the owner's key, and every build rechecks that signature against these exact bytes.

    Read the abstract on PubMed

  • Systematic review, 2022 · 17 studies pooled

    Low certainty, level 2 of 4

    Efficacy of Myo-inositol on Anthropometric, Metabolic, and Endocrine Outcomes in PCOS Patients: a Meta-analysis of Randomized Controlled Trial.

    Reprod Sci. 2022;29(8):2282-2298. doi:10.1007/s43032-022-00933-y. PMID:35477841.

    Number reported
    Not in the abstract
    Which way it went
    No clear difference
    Likely range
    Not in the abstract
    Source’s own words
    no pooled estimate reported for HOMA
    Who was studied
    Adult with PCOS
    Compared with
    folic acid, metformin or oral contraceptives (per included trial)
    Amount taken
    Not in the abstract
    For how long
    Not in the abstract
    Disagreement between studies
    heterogeneity between studies was high
    Kind of record
    Journal article
    How this rating was reachedstarts at High, 2 steps down: risk of bias and imprecision
    1. Starts at High
    2. Risk of bias brought it down to Moderatethe abstract reports no risk-of-bias or quality appraisal, so study limitations cannot be ruled outNot in the abstract
    3. Imprecision brought it down to Lowthe abstract reports no confidence interval for the estimateNot in the abstract
    4. Ends at Low2 steps down.
    Checked, nothing to step it down for
    indirectness
    Inconsistency
    No high disagreement reported between the 17 studies it pooled

    Imprecision stops at the first check that applies; others may apply too.

    AI-reviewed & signed — an AI agent re-read this finding against the saved source and checked that the quote, the numbers, the units and the direction match it. No person read it. The owner authorised the agent to sign the batch with the owner's key, and every build rechecks that signature against these exact bytes.

    Read the abstract on PubMed

What is still missing from these readings

  • One give no number at all, only which way it went.
  • One gives no likely range, so how precise that number is is unknown.
  • Two do not say how many people took part.
  • Amount taken — Not in the abstract.
  • For how long — One of Two readings: Not in the abstract.

Something nobody wrote down is never a zero and never a guess.

Still to read for Myo-inositol

One of the seven things on our list for Myo-inositol has no reading here yet:

  • Mean Amplitude of Glycemic Excursions (MAGE)

Still to read means nobody here has got to it, not that it was tried and did nothing or that no research exists. A pairing on no list is not a gap: we never set out to read it.

Read next

This is a library, not advice. No recommendation, no dose, no diagnosis, no ranking. We never ask about your symptoms, and nothing here is tailored to you.