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.
Vitamin K
Bone, joint, and mobility
Studies with an unspecified organism reported a change with no confirmed comparison group in bone mineral density.
Single-ingredient studies · Includes patient groups · comparator not confirmed
Publications for this result: 1
Other outcomes and study details
Distinct publications linked to this topic: 13
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
What has been studied?
Distinct human comparison papers: 1
bone mineral density
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Patient group · Single ingredient
Measurement and study conditions
- Review
- Review
- Single ingredient
- Patient group
- Biomarker
- Study subject not identified
- Timepoint: unspecified
- Study comparison: observational association plus conflicting supplementation studies; abstract result does not state t
bone turnover markers
Other human research, including observational studies and reviews
- An association was observed. This does not establish that the ingredient caused the change.Patient group · status before transplant
Measurement and study conditions
- Observational study
- Observational study
- Unknown intervention
- Patient group
- Secondary outcome
- Comparison unclear
- Timepoint: status before transplant
- Study comparison: vitamin K status association with bone turnover markers
clinical fractures
Research with unclear study subject or type
- The study reported improvement in this measurement.Patient group · Single ingredient
Measurement and study conditions
- Review
- Systematic review
- Single ingredient
- Patient group
- Primary outcome
- Between-group comparison
- Study subject not identified
- Timepoint: unspecified
- Between-group comparison
low aBMD
Other human research, including observational studies and reviews
- An association was observed. This does not establish that the ingredient caused the change.Patient group
Measurement and study conditions
- Observational study
- Observational study
- Unknown intervention
- Patient group
- Secondary outcome
- Comparison unclear
- Timepoint: status before transplant; aBMD within 14 days post-transplant
- Study comparison: higher dp-ucMGP/poor vitamin K status associated with low aBMD
Other measured outcomes (2)
radiographic hand osteoarthritis
- Comparison result:No clear difference from the comparison group was found.Patient group · Single ingredient
Measurement and study conditions
- Controlled human study
- Randomized trial
- Single ingredient
- Patient group
- Outcome role not specified
- Between-group comparison
- Timepoint: unspecified
- Study comparison: unspecified
vertebral fracture risk
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Patient group · not reported for OF study
Measurement and study conditions
- Review
- Systematic review
- Unknown intervention
- Patient group
- Outcome role not specified
- Study subject not identified
- Timepoint: not reported for OF study
- Study comparison: Larger OF study; no evidence of reduced vertebral fracture risk; comparator not stated in the abstra
This result is held for interpretation. That does not mean research found no effect.
Outcome groups needing additional review (10)
- BMD loss of the 1/3 distal radius · Distinct papers needing additional review: 1Evidence criteria check: 1
- joint space narrowing · Distinct papers needing additional review: 1Direction unclear: 1
- low-energy fracture incidence · Distinct papers needing additional review: 1Evidence criteria check: 1
- lumbar spine BMD · Distinct papers needing additional review: 1Evidence criteria check: 1
- OPG · Distinct papers needing additional review: 1Direction unclear: 1
- osteocalcin · Distinct papers needing additional review: 1Direction unclear: 1
- osteoporosis · Distinct papers needing additional review: 1Evidence criteria check: 1
- RANKL · Distinct papers needing additional review: 1Direction unclear: 1
- total bone mineral density · Distinct papers needing additional review: 1Evidence criteria check: 1
- undercarboxylated osteocalcin · Distinct papers needing additional review: 1Evidence criteria check: 1
One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.
Research topics to explore
Research topics to explore
Review findings reported in each research area.
Topics with more linked papers appear first.
- View selected result
Bone, joint, and mobility
Related papers 13 · human comparison papers 1
- View results
Nutrient status
Related papers 10 · comparison findings need further review
- MK4 · Interpretation held
- MK4 deficiency · Interpretation held
More outcome groups: 6
- View results
Blood pressure and vascular health
Related papers 9 · comparison findings need further review
- atherosclerosis · Interpretation held
- vascular calcification · Some studies included patients or people with a deficiency · Comparison details unconfirmed
- View results
Glucose and metabolic health
Related papers 4 · comparison findings need further review
- insulin sensitivity · Comparison details unconfirmed
- View results
Women's health
Related papers 2 · comparison findings need further review
- maternal plasma VK1 · Interpretation held
- View results
Cognition
Related papers 1 · human comparison papers 1
- MMSE score · Some studies included patients or people with a deficiency
- View results
Digestion and gut health
Related papers 1 · comparison findings need further review
- intestinal health · Some studies included patients or people with a deficiency · Comparison details unconfirmed
- View results
Immune and respiratory health
Related papers 1 · comparison findings need further review
- View results
Skin, hair, and nails
Related papers 1 · comparison findings need further review
- View results
Stress and mood
Related papers 1 · comparison findings need further review
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 31.6 evidence score includes 0 independent human studies and 0 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: 142
Papers linked to this topic 13 · distinct papers 13 · papers with a confirmed human comparison 1 · papers needing additional review 11
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.
- BMD loss of the 1/3 distal radius: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- bone mineral density: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- bone turnover markers: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- clinical fractures: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- joint space narrowing: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- low aBMD: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- low-energy fracture incidence: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- lumbar spine BMD: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- OPG: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- osteocalcin: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- osteoporosis: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- radiographic hand osteoarthritis: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 1
- RANKL: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- total bone mineral density: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- undercarboxylated osteocalcin: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- vertebral fracture risk: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
Bone, joint, and mobility
What the research found
radiographic hand osteoarthritis
No clear difference in this measurement was found between the compared groups.
Controlled study in people · Single ingredient · Patient group
Between-group comparison
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.
bone turnover markers
An association was observed. This does not establish that the ingredient caused the change.
Observational study · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
clinical fractures
The study reported improvement in this measurement.
Review · Single ingredient · Patient group
Between-group comparison
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.
low aBMD
An association was observed. This does not establish that the ingredient caused the change.
Observational study · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
bone mineral density
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · Patient group
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.
vertebral fracture risk
A change was reported, but the comparison could not be confirmed.
Review · Unknown intervention · Patient group
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.
BMD loss of the 1/3 distal radius
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Patient group
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.
joint space narrowing
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.
low-energy fracture incidence
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
lumbar spine BMD
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Patient group
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.
OPG
The study needs further checking before its result can be interpreted.
Animal study · indirect · Unknown intervention · General population
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
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.
osteocalcin
The study needs further checking before its result can be interpreted.
Animal study · indirect · Unknown intervention · General population
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
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.
osteoporosis
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
RANKL
The study needs further checking before its result can be interpreted.
Animal study · indirect · Unknown intervention · General population
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
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.
total bone mineral density
The study needs further checking before its result can be interpreted.
Meta-analysis · Ingredient combination · Unspecified population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
undercarboxylated osteocalcin
The study needs further checking before its result can be interpreted.
Meta-analysis · Ingredient combination · Unspecified population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Meta-analysis · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 2 measured outcomes
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Other evidence · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Nutrient status
What the research found
MK4
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · General population
The comparison could not be confirmed.
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.
MK4 deficiency
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
MK7
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · General population
The comparison could not be confirmed.
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.
plasma VK1 and MK-4 concentrations
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
2 papers · 2 measured outcomes
2 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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Other evidence · Unknown intervention · Unspecified population
The comparison could not be confirmed.
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.
vitamin K1
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Patient group
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.
Vitamin K1
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Patient group
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.
VK1
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · General population
The comparison could not be confirmed.
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.
VK2 blood levels
The study needs further checking before its result can be interpreted.
Observational study · Unknown intervention · Patient group
The comparison could not be confirmed.
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.
VKDB
The study needs further checking before its result can be interpreted.
Other evidence · Single ingredient · Patient group
The comparison could not be confirmed.
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.
Blood pressure and vascular health
What the research found
vascular calcification
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · Patient group
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.
atherosclerosis
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled study in people · Single ingredient · Patient group
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Meta-analysis · Single ingredient · Unspecified population
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
3 papers · 3 measured outcomes
3 papers held from direction counts
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.
vascular calcification
The study needs further checking before its result can be interpreted.
Review · Single ingredient · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
vascular calcification
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Glucose and metabolic health
What the research found
insulin sensitivity
A change was reported, but the comparison could not be confirmed.
Review · Unknown intervention · Unspecified 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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Controlled human study · Unknown intervention · Unspecified population
The comparison could not be confirmed.
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Meta-analysis · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
2 papers · 2 measured outcomes
2 papers held from direction counts
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.
Women's health
What the research found
maternal plasma VK1
The study needs further checking before its result can be interpreted.
Meta-analysis · Ingredient combination · General population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Other evidence · Single ingredient · Unspecified population
The comparison could not be confirmed.
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.
Cognition
What the research found
MMSE score
An association was observed. This does not establish that the ingredient caused the change.
Observational study · Unknown intervention · Patient group
Between-group comparison
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.
Digestion and gut health
What the research found
intestinal health
A change was reported, but the comparison could not be confirmed.
Review · Single ingredient · Patient group
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.
Immune and respiratory health
What the research found
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Skin, hair, and nails
What the research found
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Meta-analysis · Unknown intervention · Patient group
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
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.
Stress and mood
What the research found
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Animal study · indirect · Single ingredient · Patient group
This finding comes from animal or cell research. It does not establish the same effect in people.
The comparison could not be confirmed.
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.
Caution findings
0
Findings from individual and combined use, plus reviewed cautions
Key precautions
No combination cautions are available to show in the current data. This does not guarantee safety.
These findings were reported in studies. They do not predict an individual's experience.
Side effects and combination studies
No side-effect or combination findings are available to show from the collected papers. This does not establish safety.