All sites / United Kingdom / #53 / Health and medical / publisher / US Government

nih.gov held its search traffic within 10%.

estimated monthly search visits, Oct 2024: 4.8M; estimated monthly search visits, Oct 2024
estimated monthly search visits, Oct 2026: 4.5M; estimated monthly search visits, Oct 2026
change in estimated search traffic: −7%; change in estimated search traffic
change in keywords ranking top 3: +40%; change in keywords ranking top 3

Estimated search traffic

nih.gov, Ahrefs estimated monthly organic search traffic, United Kingdom. Dotted line marks the Oct 2024 level. Vertical marks are Google results page changes.

Keywords ranking in Google's top three

nih.gov, keywords ranking positions 1 to 3, United Kingdom. Dotted line marks the Oct 2024 level. Vertical marks are Google results page changes.

Points are Ahrefs Site Explorer estimates for the first of each month shown. Months in between are being collected. All 617,529 ranking keywords in Oct 2026, against 2,065,118 in Oct 2024.

How often AI answers cite nih.gov

Engine	Citations in the Ahrefs index
ChatGPT	withheld, failed consistency check
Google AI Mode	16,495
Gemini	3,155

Ahrefs AI responses index, captured 28 October 2026, United Kingdom, including subdomains.

Five questions we ask the AI engines about nih.gov

Written from the site's own top Google keywords, keeping the intent of the search.

Engine	Named	Linked
ChatGPT	4 of 5	4 of 5
Google AI Mode	1 of 5	1 of 5
Gemini	1 of 5	1 of 5

Give me an overview of “food poisoning”, with links to reliable sources.from the keyword “food poisoning”
Give me an overview of “ashwagandha”, with links to reliable sources.from the keyword “ashwagandha”
Give me an overview of “glp-1”, with links to reliable sources.from the keyword “glp-1”
Give me an overview of “fentanyl”, with links to reliable sources.from the keyword “fentanyl”
Give me an overview of “ivermectin”, with links to reliable sources.from the keyword “ivermectin”

Visits since ChatGPT launched

all visits, Nov 2022: 11.1M; all visits, Nov 2022
all visits, Oct 2026: 8.3M; all visits, Oct 2026
organic search visits, Oct 2026: 3.3M; organic search visits, Oct 2026
visits from AI assistants, Oct 2026: 128K; visits from AI assistants, Oct 2026

Semrush Traffic Analytics modelled visits, United Kingdom, a separate source from the Ahrefs estimates above. Semrush restates this data on 9 November 2026.

nih.gov is also in the top 100 in Australia and United States.