Evidence report library
Browse health and science claims by evidence strength.
Search deHype reports by topic, grade, study type and clinical relevance. Each card gives the practical verdict first, then links to the full source-chain review.
Explore by topic
Top public report topics, ranked by current archive coverage.
Cancer
A guide to interpreting news and research about cancer, with evidence checks on headlines,…
7 reports
Dementia
Evidence checks about dementia headlines, Alzheimer’s claims, supplements, biomarkers, and…
7 reports
Diet and nutrition
Diet and nutrition headlines often exaggerate the strength of evidence, particularly when …
2 reports
Heart health
Evidence checks about cardiovascular headlines, cholesterol, blood pressure, stroke, stati…
1 report
Longevity
Explore evidence and critical reviews relating to ageing, biological age markers, and anti…
1 report
Mental health
Evidence checks about depression, anxiety, stress, psychedelics, apps, lifestyle intervent…
1 report
Latest evidence reports
Concise archive cards help readers decide whether to open the full source-chain report.
Evidence check: COVID Shots Tied to Lower Risks of Heart Attack, Cardiac Death
The article accurately represents promising observational evidence for cardiovascular benefits of COVID vaccination in older adults, though causal inference is limited and effects are small outside high-risk groups.
Observational benefit Randomised human evidence Potentially actionable with caution
Evidence check: Poor sleep linked to rising cancer risk in under-50s
The study suggests an association between poor sleep and early-onset cancers, but evidence is observational and confounding factors prevent causal inference.
Observational, not causal Observational human evidence Not clinically actionable
Evidence check: Blood and spinal fluid proteins reveal distinct fingerprints of four brain diseases
This is a robust molecular profiling study in humans, but proposed diagnostic and therapeutic applications are not yet validated, making clinical conclusions premature.
Early-stage only Limited human evidence Hypothesis-generating only
Evidence check: Cycling Linked to Lower Risk of Dementia, Study of Half a Million Finds
The study shows an association between cycling and lower dementia risk, but is observational and does not establish that cycling prevents dementia; results could be affected by confounding factors.
Early-stage only Observational human evidence
Evidence check: Early-Onset Colorectal Cancer Risk Factors Identified
These conference-presented studies provide plausible but non-causal evidence from observational human data linking several risk factors—including obesity, family history, metabolic/hematologic markers, and oral antibiotic exposure—to early-onset colorectal cancer or adenomas; however, the findings are not sufficient to change clinical guidance without peer-reviewed publication and further validation.
Preliminary & Observational