Supplementation
What happens when vitamin D is administered, compared with placebo, usual care or another dose?
Search intervention records →
Independent vitamin D research catalog
Vitamin D studies,
Vitamin D studies,
clearly presented.
Search publication records from 2017 onward. Most are bibliographic candidates, not reviewed studies. Earlier publications will be added in a later phase.
Search titles, authors or PubMed IDs. Try “osteoporosis”, “high dose” or “pregnancy”.
Health topics
One library, clearly separated questions.
Each topic shows studies with full-text notes and candidate publication records still to screen. Candidates are identified by title; some are not human studies, and one publication may fit several topics. These are not final study totals.
Bone health & osteoporosisFractures, bone density, calcium metabolismCounting records…01
Cardiovascular healthMajor events, blood pressure, vascular outcomesCounting records…02
Cancer researchIncidence, mortality, progression and supportive careCounting records…03
Respiratory infection & immunityInfection risk, severity and immune outcomesCounting records…04
Metabolic healthDiabetes, glucose regulation, weight and lipidsCounting records…05
Pregnancy & child developmentMaternal, neonatal and childhood outcomesCounting records…06
Neurological & cognitive healthCognition, mood and neurological outcomesCounting records…07
Muscle, falls & performanceStrength, falls, exercise and recoveryCounting records…08
Publications · 2017–2026
Browse the source records.
Every result links to its bibliographic source. A source check confirms identifiers and publication details only; it does not validate the study's design, outcomes or clinical relevance.
Search results may include animal, laboratory, commentary or indirectly relevant publications. We have not yet confirmed the population or the intervention for most records. No treatment recommendation is implied.
01
Human evidence firstHuman relevance still needs checking for most candidate records.
02
Clinical outcomes matterA biomarker change is not presented as patient benefit.
03
Limits stay attachedNull and unfavorable results remain eligible.
04
No commercial influenceDonations never buy favorable coverage.
Evidence map
Start with the question, not the claim.
Different study types answer different questions. The library keeps interventions, vitamin D status and safety signals distinct.
Vitamin D status
How are measured 25(OH)D levels associated with health outcomes, and what can observational data establish?
Search status records →Safety & toxicity
What adverse outcomes have been reported, at which doses, over what duration and under what monitoring?
Search safety records →
Dedicated safety evidence
High doses deserve more than a warning label.
The safety section will connect dose, formulation, duration, baseline status, calcium intake, monitoring and reported adverse outcomes. Case reports will remain visible but separate from controlled evidence.
Search safety reportsHypercalcemia
Severity, symptoms, duration and management.
Hypercalciuria
Thresholds, collection method and kidney-stone context.
Renal outcomes
Stones, acute injury and nephrocalcinosis.
Calcification
Vascular and soft-tissue evidence kept distinct.
Study record structure
Every conclusion keeps its context.
A publication page will show what the source reports, what the library has checked and what remains uncertain.
Example structureHuman researchFull source required
Study title and source-linked citation
The record will not call a study positive or successful without showing the outcomes, effect estimates and limitations behind that label.
PopulationAge, condition, sample size
Baseline status25(OH)D level and threshold
InterventionForm, dose and schedule
DurationTreatment and follow-up
Co-interventionsCalcium, magnesium, K2
FundingSponsor and conflicts
How the library will work
Five stages. No hidden leap from search result to conclusion.
Artificial intelligence may assist search, matching and extraction. Medical conclusions are not published automatically.
- 01Candidate record
Located through a documented database search.
- 02Metadata checked
Identifiers, authors and source relationships confirmed.
- 03Full source checked
The complete available text used for structured extraction.
- 04Editorial extraction reviewed
Dose, outcomes, harms and limitations checked.
- 05Evidence synthesis
Studies assessed together for a defined question.
Funded by readers, not advertisers
Help keep the evidence independent.
The library will accept voluntary donations only. It will not accept advertising, affiliate commissions, paid product placement or payment for study inclusion and favorable wording.
- Accessing full research sources
- Checking and organizing study records
- Hosting, maintenance and corrections
- Keeping the public library freely accessible
One-time donations
Support will open soon.
Donations are not yet open. The secure checkout will be added in a later phase.
A donation never influences which studies are included or how evidence is described.
A permanent commitment
Read the independence policy →
Zero advertising.
No banners, sponsored articles, affiliate links or commercial rankings. Products and manufacturers may be mentioned only when required to understand a study, intervention or documented conflict of interest.