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.
Calcium
Selected research topic
Blood lipids
Confirmed comparison evidence for this topic is limited. The findings below retain their study conditions.
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.
- Publications for this topic
- 3
- Human comparison publications
- 0
- Publications needing review
- 1
Findings in the studies
low density lipoprotein cholesterol (LDL-C) level
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Single ingredient · varied across included trials
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- How results were compared
- Study comparison: Pooled LDL-C result and prespecified subgroups; comparator not reported
- Additional measurement information
- Biomarker
- Measurement time
- varied across included trials
low-density lipoprotein cholesterol
Research with unclear study subject or type
- The study reported improvement in this measurement.
Several ingredients were tested together, so this ingredient’s individual effect is unknown.
What the comparison group used was not confirmed.
Combination studyMeasurement and study conditions
- Study type
- Systematic review
- Study population
- Study subject not identified
- Ingredients tested
- Ingredient combination
- How results were compared
- Results were compared between groups.
- Measurement time
- Not confirmed.
Total Cholesterol (TC) level
Research with unclear study subject or type
- A change was reported, but the comparison could not be confirmed.Single ingredient · varied across included trials
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Study subject not identified
- Ingredients tested
- Single ingredient
- How results were compared
- Study comparison: Subgroup result for calcium intake below 1000 mg/day; comparator not reported
- Additional measurement information
- Biomarker
- Measurement time
- varied across included trials
Representative outcome and study details
Studies with an unspecified organism reported a change with no confirmed comparison group in low density lipoprotein cholesterol (LDL-C) level.
Single-ingredient studies · Population 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 44.3 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: 52
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.
- low density lipoprotein cholesterol (LDL-C) level: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- low-density lipoprotein cholesterol: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Total Cholesterol (TC) level: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
What the research found
low-density lipoprotein cholesterol
The study reported improvement in this measurement.
Review · Ingredient combination · Unspecified population
Several ingredients were used together. This does not establish the effect of this ingredient alone or synergy.
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 density lipoprotein cholesterol (LDL-C) level
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Single ingredient · 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.
Total Cholesterol (TC) level
A change was reported, but the comparison could not be confirmed.
Meta-analysis · Single ingredient · 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.
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.
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 reviewed caution rules are available yet. Reported caution findings are shown below.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Side effects reported with this ingredient alone
Symptoms or adverse events reported in studies without another active ingredient.
abdominal discomfort1 papers
One patient experienced abdominal discomfort during calcium supplementation (500 mg/day).Human studies · Observational studyCautions reported with another supplement or medication
These studies reported worsening outcomes, reduced absorption, or other cautions with combined use. They do not predict an individual's outcome.
당뇨병Calcium supplementation showed significant multiplicative and additive interaction with diabetes status, increasing CVD risk in diabetic individuals.