PubMed
NIH/NLM biomedical literature database. 40M+ citations from MEDLINE and life science journals. Free. The definitive starting point for health and science journalism research.
What should journalists know about PubMed?
PubMed is the single most important database for health and science journalism. Run by the National Library of Medicine (part of NIH), it indexes over 40 million citations from MEDLINE, life science journals, and online books — covering everything from clinical trials to molecular biology to public health. If someone makes a health claim, PubMed is where you go to check what the evidence actually says. The search interface is functional if not beautiful. Basic keyword searches work, but the real power is in MeSH (Medical Subject Headings) — NLM's controlled vocabulary that standardizes how topics are indexed. Searching 'heart attack' also pulls results indexed under 'myocardial infarction' because MeSH maps the terms together. For journalists, this means you find relevant studies even when researchers use different terminology than the public. PubMed is a citation database, not a full-text database. It gives you abstracts, metadata, and links to full text — but the full text often lives behind publisher paywalls. PubMed Central (PMC), a separate but linked repository, provides free full-text access for articles funded by NIH and other open-access research. The 2026 baseline release includes updated MeSH terms and improved FTP data distribution matching the website and API. Recent usability updates (2025) added date stamps to search history downloads, improved reference list rendering, and streamlined sharing. The E-utilities API allows programmatic access for data journalists who need to search at scale. PubMed does not evaluate study quality — it indexes what journals publish. A poorly designed study in a predatory journal sits alongside a landmark randomized controlled trial in The Lancet. Learning to assess study design, sample size, and journal quality is your responsibility. PubMed is the starting line, not the finish line.
Researching the evidence base for any health or medical claim. Finding published studies on drugs, treatments, diseases, and public health topics. Backgrounding medical experts by their publication history. Identifying systematic reviews and meta-analyses that synthesize evidence across multiple studies. Tracking emerging research on infectious diseases, drug safety, environmental health, and other ongoing stories.
Evaluating study quality (PubMed indexes everything regardless of rigor — you must assess methodology yourself). Getting full text (PubMed provides abstracts and links; full text is often paywalled unless available through PMC). Non-biomedical research (use Google Scholar, JSTOR, or discipline-specific databases for social sciences, humanities, or engineering). Real-time information (studies take months to years from research to publication — PubMed is not a news source).
Security & Privacy
Data is scrambled while being sent to their servers
Data is scrambled when stored on their servers
Where servers are located — affects which governments can request your data
Privacy policy summary
PubMed is a US government service. No account required for searching. If you create an NCBI account (for saving searches and setting alerts), NIH collects your email and search preferences. NIH's privacy policy follows federal guidelines — no advertising, no data sales, no third-party tracking. Web traffic analytics are collected for service improvement under standard government website practices. Your search queries are not linked to your identity unless you are logged in.
How to protect yourself:
No account is needed for basic searching — use PubMed without logging in if you want no search history tied to your identity. For sensitive health investigations (e.g., researching specific rare diseases that could identify sources), consider that search queries on a government server could theoretically be subject to FOIA or legal process, though this is extremely unlikely for routine use. Use PubMed Central (PMC) to find free full-text versions before paying for paywalled articles. Set up email alerts for ongoing stories — PubMed will notify you when new studies matching your search are published. Learn basic MeSH terms for your beat; they dramatically improve search precision.
US government service operated by NIH/NLM with no advertising, no data sales, and no third-party tracking. No account required for searching. Federal security standards apply to infrastructure. The only data you provide is your search query, and the service returns publicly available citation data. There is effectively zero security risk in using PubMed for journalism research. The 'strong' rating reflects the institutional credibility, absence of commercial incentives, and minimal data collection.
Who Owns This
Known issues
PubMed indexes publications regardless of quality — predatory journals, retracted studies, and low-quality research appear alongside rigorous work. Retracted articles are marked but remain in the database (by design, for the scholarly record). Full text is frequently paywalled; PubMed links to publishers who charge $30-50 per article. Not all biomedical literature is indexed — conference abstracts, preprints, and publications from some international journals may be missing. Search results default to 'Best Match' ranking, which uses an algorithm that may not surface the most recent or most relevant results for journalism purposes (switch to 'Most Recent' for breaking science stories). The E-utilities API has rate limits (3 requests/second without API key, 10 with key).
Pricing
Free
This is an editorial assessment based on publicly available information as of 2026-04-11, using our published methodology. Independent security review is pending. Security posture can change at any time. This is not a guarantee of safety.
Something wrong or outdated? Report it.