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
Biotin benefits: where the science stands
For blood sugar: not settled yet.
On blood sugar, the strongest evidence says it does not help: a combined review, plus a trial of 33 people found no real difference. As of August 2026, the verdicts on this page rest on evidence from 2 trials, drawn from the strongest research among the 528 papers on PubMed that mention biotin. Every claim is checked below.
528 papers on PubMed · evidence from 2 trials
Claim by claim
- Blood sugarThe science is still forming. No real difference found so far.
- CholesterolAlmost no real studies. What exists leans positive.
Pairs people ask about
The two sources we read
- 2006Randomized trial · 33 people · no clear effect on blood sugar; benefit for cholesterolsource
- 2025Meta-analysis · no clear effect on blood sugarsource
Chosen as the strongest evidence out of 528 papers on PubMed. Every row links to its paper.
Fair questions
Does biotin work?+
For blood sugar, it is not settled. No real difference found so far.
Is biotin safe?+
No caution is recorded on this page. That is not a safety guarantee; the studies we read were not safety trials.
Why only 2 sources, when PubMed lists 528?+
The 528 is every paper that mentions biotin 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 2 cover 2 trials between them, and every one is linked above. Both counts are measured, not estimated.