Mentionable Index
ChatGPT
Google AI ModeAIOGoogle AI Overview
Perplexity
Grok
Copilot
Gemini
Is pmc.ncbi.nlm.nih.gov cited by AI?
Yes. From February 2026 to September 2026, pmc.ncbi.nlm.nih.gov was found 3,526 times across 2,145 AI responses analyzed by Mentionable. ChatGPT cites it most often (1,366 times).
An engine lists more sources than it cites in its text. Here, 60% of citations appear in the answer itself: the rest sits in the list of sources, outside the text.
3,526
Citations
60%
Visible in answer
1,025
Pages cited
7
Engines
Which engines cite it
Engines do not lean on the same sources, and do not put them in their text the same way.
EngineCitationsVisible
1,36644%
73950%
AIO494100%
409100%
2793%
144100%
9599%
What AI engines look for on pmc.ncbi.nlm.nih.gov
1,025 distinct URLs from this domain were recorded. Citations concentrate on these sections.
/articles
100%
/
0%
/about
0%
Month by month
1
Feb 26
59
Mar 26
21
Apr 26
875
May 26
389
Jun 26
1,317
Jul 26
721
Aug 26
143
Sep 26
In which markets
Beauty & cosmetics2,806Health & medical292Nonprofits & NGOs62Manufacturing & industry57AI tools & assistants56Supplements & nutrition55Education & training53Media & publishing46Sports & fitness28Events & weddings23E-commerce & online retail14IT services & cybersecurity9Developer tools & software6Business consulting5Construction & trades5Marketing & SEO agencies4B2B SaaS3Fashion, jewelry & luxury1HR & recruitment1
Frequently asked questions
Which AI engines cite pmc.ncbi.nlm.nih.gov?
6 engines cite pmc.ncbi.nlm.nih.gov over the period: ChatGPT (1,366), Google AI Mode (739), Google AI Overview (494), Perplexity (409), Copilot (144), and Gemini (95). Claude has not cited it.
Do AI engines put pmc.ncbi.nlm.nih.gov in the text of their answers?
60% of pmc.ncbi.nlm.nih.gov citations appear in the text of the answer, the rest sits in the list of sources. Google AI Overview puts it in its text most often (100%).
Which pages of pmc.ncbi.nlm.nih.gov do AI engines cite?
Citations cover 1,025 distinct URLs and concentrate on /articles (100%), / (0%), and /about (0%).
Where does pmc.ncbi.nlm.nih.gov rank among the sources cited in Beauty & cosmetics?
pmc.ncbi.nlm.nih.gov ranks 7th of 1,547 domains recorded in Beauty & cosmetics, with 2,806 citations in this sector.
And on your own domain, rather than pmc.ncbi.nlm.nih.gov?
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Other sources cited in Beauty & cosmetics
| # | Domain | Citations |
|---|---|---|
| 1 | 24,881 | |
| 2 | 6,988 | |
| 3 |  instagram.com | 4,677 |
| 4 | 3,884 | |
| 5 | 3,649 | |
| 6 | 3,399 | |
| 7 | 2,395 | |
| 8 | 1,763 | |
| 9 | 1,404 | |
| 10 | 1,340 |