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Trial, not randomized · measured other health measures

A 60-day berberine study in 12 women with polycystic ovary syndrome found lower BMI

Rondanelli and colleagues · Nutrients · 2021

Original title: Berberine Phospholipid Is an Effective Insulin Sensitizer and Improves Metabolic and Hormonal Disorders in Women with Polycystic Ovary Syndrome: A One-Group Pretest-Post-Test Explanatory Study.

Under review. A person has not yet checked this summary against the paper. It is written from the PubMed abstract. Until a person checks it, search engines are asked not to list this page.

What the study found

Points to benefit

After 60 days, insulin resistance (HOMA), body mass index and fat mass fell. Fasting blood sugar is not reported in the abstract.

The study at a glance

Type of study
Trial, not randomized
Who or what was studied
12 people · 12 young women with polycystic ovary syndrome, normal weight to overweight
What was tested
Berberine phospholipid, two 550 mg tablets a day for 60 days, no comparison group
What it measured
Several kinds of outcomes
Daily amount
1100 mg a day
How long
9 weeks
Who has a stake
No stake declared
No competing interests declared.
Journal
Nutrients, 2021
Source
PubMed record 34684666. This page is based on the abstract only.

How much this study counts

  • –Not randomized: the groups may differ in ways that affect the result.
  • –No comparison group: some changes might have happened anyway.
  • –Small: 12 people. Small trials can miss real effects or find chance ones.
  • –Short: 9 weeks. Longer-term effects are unknown.
  • •Measured several kinds of outcomes.
  • ✓No competing interests declared.
  • •Summarized from the PubMed abstract only. The full paper may hold details the abstract leaves out.

✓ Strength– Limit• Note

These points come from fixed rules about the type of study, its size and length, what it measured, and who has a stake. Every study on Digestery gets the same rules.

Where this study sits

Each dot is one on-topic paper on this question. Steps near the top answer the question more directly.

↑ Stronger evidence

  1. Trials in people: weight and blood sugar

    7

    7 benefit

  2. Trials in people: other measures

    7

    5 benefit, 1 mixed, 1 no difference

    ↑ This study is the ringed dot

  3. Trials in people: lab tests or safety

    2

    1 benefit, 1 no difference

  4. Population studies

    2

    2 benefit

  5. Blood levels and genes

    0

    None among the papers we read.

  6. Animals

    1

    1 benefit

↓ Weaker evidence

  • Points to benefit
  • Mixed
  • No difference
  • No direction
  • Points to harm

How it fits with the other research

The short answer to “Does berberine help with weight loss and blood sugar?”

Lowers blood sugar in diabetes; weight unclear.

Confidence: low. Based on 28 on-topic papers.

Read the full answer

Of the other 6 papers on the same step: 4 benefit, 1 mixed, 1 no difference. This one found benefit. It agrees with most of them.

  • Counted on the ladder, but not quoted in the page’s main findings.

Other papers on the same step

See all 28 studies on this question

How this page was made

Label

First read of the abstract
Claude Sonnet
Independent second read
Claude Haiku
Differences settled
The reviewer corrected 1 field after reading the abstract. Claude Opus 5.5.
Headline
Claude Sonnet, from the checked study record. A script checked its numbers and wording.
Numbers
Checked against the abstract by a script
“How much this study counts”
Fixed rules, the same for every study
Source check by a person
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