About SleepCited
Evidence-based supplement research you can trust.
Our Mission
Cited Health is an evidence-based supplement research network. We believe every health claim about dietary supplements should be backed by peer-reviewed scientific research — not marketing hype, influencer endorsements, or anecdotal testimonials. That's why every claim on our sites is cited with its source study.
Our mission is to make supplement research accessible and transparent. We systematically search PubMed for clinical trials and observational studies, extract structured data from each paper, and calculate evidence grades that tell you at a glance how strong the science really is.
What Makes Us Different
Unlike supplement review sites that rely on affiliate commissions to drive recommendations, our evidence grades are calculated algorithmically from study data. An ingredient receives an F grade when the evidence warrants it, regardless of whether we earn affiliate revenue from that product. Our grading methodology is transparent and reproducible.
Our Commitment
Every evidence grade on this site is calculated from peer-reviewed study data. Affiliate partnerships never influence our grading.
Our Research Process
We follow a systematic, reproducible methodology for evaluating supplement evidence. Read our full methodology →
Systematic Search
Identify relevant research from PubMed
Paper Screening
Filter for relevance and quality
PICO Extraction
Extract structured study data
Our Team
Cited Health Research Team
Evidence Review — PubMed systematic search methodology
Our research team conducts systematic searches of PubMed and PubMed Central to identify relevant clinical trials, meta-analyses, and observational studies for every ingredient-condition pair.
AI-Assisted Extraction
PICO Data Extraction — Claude AI with human oversight
Study data (population, intervention, comparison, outcome) is extracted using AI assistance, then validated against source publications. Every extraction includes a confidence score and risk-of-bias assessment.
Algorithmic Grading Engine
Evidence Grading — Transparent, reproducible scoring system
Evidence grades (A through F) are calculated algorithmically based on study type quality, result consistency, total sample size, and number of studies. The grading algorithm is deterministic and reproducible.
Data Sources
Our research is built on data from the world's most authoritative biomedical databases.
The U.S. National Library of Medicine's database of biomedical literature, containing over 36 million citations. Our primary source for identifying relevant clinical trials and systematic reviews.
Full-text archive of biomedical journal articles. We import CC-BY licensed full-text papers via JATS XML, preserving sections, figures, tables, and reference lists for comprehensive analysis.
Allen Institute for AI's academic search engine. Used to enrich our paper database with citation counts and influence scores, helping assess the impact and reach of individual studies.
U.S. National Library of Medicine's registry of clinical studies. Referenced for ongoing trials and registration verification of published study results.
The Cited Health Network
Cited Health Inc. operates a network of specialized supplement review sites, each focused on a specific health category. Every site in the network shares the same rigorous evidence grading methodology.
Contact
For general inquiries: [email protected]
Report an error: [email protected]
Security issues: [email protected]