immortal.lifeCompare the intervention, participants, study design and measured outcomes before treating two longevity headlines as conflicting evidence.
Two studies can report different findings because they asked different questions. First compare the exact exposure, population, comparator, outcome and follow-up. Then inspect the findings and their uncertainty in the original sources. An index label cannot resolve a scientific disagreement.
Automated publication · Guidance updated . This explains how to inspect sources; it is not a clinical evidence assessment or personal medical advice.
A whole food, a dietary pattern, an extract and an isolated compound are different exposures. Preparation, dose, duration and what the exposure replaces can change the question being tested. A shared everyday name does not make two interventions equivalent.
An association between an exposure and an outcome is different from a comparison created by assigning an intervention. Read how participants entered groups, how confounding was addressed and whether the analysis followed the design. A design label alone does not establish quality.
Age, baseline risk, health status and background treatment affect applicability. A trial comparing two active approaches asks a different question from one comparing an intervention with placebo or usual care. Check who was excluded as well as who participated.
A molecular marker, a symptom score, a clinical event and survival are different endpoints. Short follow-up may answer a different question from long follow-up. Inspect which outcome was primary, how it was measured and whether the comparison was planned.
The 2018 PREDIMED report studied Mediterranean dietary patterns supplemented with extra-virgin olive oil or nuts in people at high cardiovascular risk. A 2014 paper analysed observed olive-oil consumption within PREDIMED. These sources illustrate why a dietary-pattern trial and an intake association should be read separately; their titles do not establish that the findings conflict. Read the revised trial report’s account of departures from random assignment.
Inspect effect estimates, uncertainty intervals, missing data and the number of events. Several papers may analyse overlapping participants rather than independent replications. Look for corrections and later reports, and keep an unresolved question visible when the sources do not support a clear conclusion.
This is the complete topic directory, not a claim of complete research coverage. Each dossier explains the questions and limits relevant to its field.