Improvement after a supplement is not the same as a comparative result
Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.
Saffron
Selected research topic
Blood pressure and vascular health
The comparison is unconfirmed, so the findings cannot establish this ingredient’s effect.
Findings from a combination study cannot be attributed to this ingredient alone.
Some publications still need interpretation checks and are kept separate from the findings below.
Some findings concern patients or people with a deficiency.
- Publications for this topic
- 3
- Human comparison publications
- 0
- Publications needing review
- 1
Findings in the studies
systolic BP
Other human research, including observational studies and reviews
- A change was reported, but the comparison could not be confirmed.
Several ingredients were tested together, so this ingredient’s individual effect is unknown.
Patient group · Combination study · 12 weeksMeasurement and study conditions
- Study type
- Randomized controlled trial: subjects were randomly assigned to groups for comparison.
- Study population
- Human participants · Patient group
- Ingredients tested
- Ingredient combination
- How results were compared
- Study comparison: RT+saffron versus control and saffron-alone groups; not a saffron-alone estimate
- Additional measurement information
- Primary outcome
- Measurement time
- 12 weeks
diastolic blood pressure
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.varied across included trials
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: General population. Whether the research involved humans needs confirmation.
- Ingredients tested
- Unknown intervention
- How results were compared
- Study comparison: Pooled outcome across included trials; comparator details not reported
- Additional measurement information
- Secondary outcome
- Measurement time
- varied across included trials
systolic blood pressure
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.varied across included trials
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: General population. Whether the research involved humans needs confirmation.
- Ingredients tested
- Unknown intervention
- How results were compared
- Study comparison: Pooled outcome across included trials; comparator details not reported
- Additional measurement information
- Secondary outcome
- Measurement time
- varied across included trials
This result is held for interpretation. That does not mean research found no effect.
Outcome groups needing additional review (1)
- standing systolic blood pressure · Distinct papers needing additional review: 1Direction unclear: 1
One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.
Representative outcome and study details
Studies with an unspecified organism reported a change with no confirmed comparison group in diastolic blood pressure.
Scope not specified · comparator not confirmed
1 publications linked to this result
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
Data coverage and detailed study classifications
Paper counts are separated by research topic below. One paper may contribute to multiple findings.
Analysis status: Public-ready
Ingredient analysis date:
How the grade was determined: C
The 39.7 evidence score includes 1 independent human studies and 1 clinical studies in the representative benefit area. The C tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.
Papers linked to this ingredient overall: 97
Papers linked to this topic 3 · distinct papers 3 · comparison findings need further review · papers needing additional review 1
A publication may appear in more than one count. These numbers should not be added. Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.
- diastolic blood pressure: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- standing systolic blood pressure: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- systolic blood pressure: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- systolic BP: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
What the research found
diastolic blood pressure
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Unknown intervention · General population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
systolic blood pressure
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Unknown intervention · General population
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
systolic BP
A change was reported, but the comparison could not be confirmed.
Controlled study in people · Ingredient combination · Patient group
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
Analysis coverage and paper counts
1 paper · 1 measured outcome
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
standing systolic blood pressure
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · General population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
How to read research findings
How should I read research findings?
Research guidesNo clear difference and an uninterpretable result are different
A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.
Paper counts and study counts are different
Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.
Side effects and combination findings
Findings from this ingredient alone are shown separately from those involving another supplement or medication.
No combination cautions are available to show in the current data. This does not guarantee safety.
Side effects and combination studies
No side-effect or combination findings are available to show from the collected papers. This does not establish safety.