What do the states mean?+
- Solid: well studied, and it works.
- Half-there: the science is still forming.
- A ghost: almost no real studies.
- Hollow: well studied, and it does not work.
- A cord: the pair itself has been tested together.
- Air: nobody has ever tested this pair.
The full scoring method: How we score
Inositol benefits: where the science stands
For mood: not settled yet.
Mood is what most people take inositol for, and the best studies disagree: one found it helps, two found no effect. As of August 2026, the verdicts on this page rest on evidence from 84 trials, drawn from the strongest research among the 697 papers on PubMed that mention inositol. Every claim is checked below.
697 papers on PubMed · evidence from 84 trials
Claim by claim
- MoodThe science is still forming. The best studies disagree.
- Blood pressureWell studied, and it works. The biggest review covered 7 trials.
- Blood sugarWell studied, and it works. A safety question was raised.
- CholesterolWell studied, and it works. Tested in 282 people.
See 8 more scored claims+
- FertilityThe science is still forming. The best studies disagree.
- LiverThe science is still forming. The best studies disagree.
- Memory and focusThe science is still forming. No real difference found so far.
- Polycystic ovary syndromeThe science is still forming. The best studies disagree.
- PregnancyThe science is still forming. The best studies disagree.
- SleepThe science is still forming. Results lean positive, but there is not much yet.
- Stress and anxietyThe science is still forming. No real difference found so far.
- Weight and body fatThe science is still forming. No real difference found so far.
Pairs people ask about
The 25 sources we read
- 2011Randomized trial · benefit for fertilitysource
- 2012Randomized trial · 80 people · benefit for blood sugar; benefit for cholesterol; no clear effect on weight and body fatsource
- 2017Randomized trial · 26 people · small benefit for blood sugarsource
- 2017Randomized trial · 110 people · benefit for cholesterolsource
- 2017Meta-analysis · no clear effect on memory and focussource
- 2018Randomized trial · 60 people · small benefit for moodsource
- 2019Meta-analysis · pools 20 trials, 1,239 people · moderate benefit for blood sugar; no clear effect on weight and body fatsource
- 2020Meta-analysis · pools 1 trials · no clear effect on liversource
- 2021Randomized trial · 60 people · no clear effect on fertilitysource
- 2021Meta-analysis · pools 7 trials · moderate benefit for blood pressuresource
- 2022Meta-analysis · no clear effect on mood; no clear effect on stress and anxietysource
- 2022Randomized trial · 60 people · small benefit for sleepsource
- 2023Meta-analysis · pools 8 trials, 1,795 people · large benefit for blood sugarsource
- 2023Meta-analysis · benefit for blood sugar; benefit for polycystic ovary syndromesource
- 2023Randomized trial · 92 people · no clear effect on blood sugar; benefit for cholesterol; benefit for liversource
- 2023Meta-analysis · no clear effect on moodsource
- 2023Meta-analysis · pools 5 trials, 1,052 people · large benefit for blood pressure; benefit for pregnancysource
- 2024Meta-analysis · pools 4 trials · no clear effect on fertilitysource
- 2024Meta-analysis · pools 4 trials, 317 people · large benefit for blood sugarsource
- 2024Randomized trial · 200 people · benefit for blood sugarsource
- 2024Observational study · 585 people · a harm signal on blood sugarsource
- 2025Meta-analysis · pools 11 trials, 981 people · small benefit for fertilitysource
- 2025Meta-analysis · benefit for cholesterol; no clear effect on polycystic ovary syndromesource
- 2025Randomized trial · 464 people · no clear effect on pregnancysource
- 2026Meta-analysis · pools 9 trials, 440 people · large benefit for polycystic ovary syndromesource
Chosen as the strongest evidence out of 697 papers on PubMed. Every row links to its paper.
Fair questions
Does inositol work?+
For mood, it is not settled. The best studies disagree.
Is inositol safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
Why only 25 sources, when PubMed lists 697?+
The 697 is every paper that mentions inositol in any way: animal studies, blood measurements, papers where it is a side note. The strongest sources are combined reviews, and each one already gathers every trial its authors could find. Our 25 cover 84 trials between them, and every one is linked above. Both counts are measured, not estimated.