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Bio-Analyst

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Tier-CPublic-ready6/11/2026

Calcium

Bone, joint, and mobility is the main area connected here, and any felt benefit should be read together with the human evidence base.

Representative tier calculated from paper evidence that passed the collection audit.

Papers analyzed
20
Caution signal
Moderate
Representative score
51.5
Bone, joint, and mobilityMenstrual and women's healthCondition-specific health context in a specific context

Main benefit evidence

The representative ingredient tier is calculated from these target-level evidence groups.

Bone and joint health
3 studiesTier-C
Bone, joint, and mobility
Fairly consistent positive signal in studiesFelt benefit focusPatient-group study
Potential benefit studied in Bone and joint health.
Open metrics
>
Bone, joint, and mobility
No direct rate reported. Read direction and evidence strength together.
Evidence score
47.5
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Women's health
1 studiesTier-C
Menstrual and women's health
Some positive signal observedFelt benefit focusPatient-group study
Potential benefit studied in Women's health.
Open metrics
>
Menstrual and women's health
No direct rate reported. Read direction and evidence strength together.
Evidence score
44.0
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Condition-specific evidence
1 studiesTier-C
Condition-specific health context in a specific context
Some positive signal observedResearch marker focusSupplement context
This result was studied for Condition-specific health context in a narrower population or condition-specific context. It should not be generalized as an everyday supplement effect.
Closer to a research marker than a directly felt benefit.
Open metrics
>
Condition-specific health context
No direct rate reported. Read direction and evidence strength together.
Evidence score
42.1
Score reflects signal strength. Tier also considers paper count, repetition, and study context.

Recent research

Updated This Month10 new papers

10 new papers were added in this period. No new risk signal was identified.

What's new

10 new papers were added.No new risk signal was identified.

Most notable recent finding

This is the most meaningful new study in the latest update.
review
Why it mattersIt ranked highest among the newly collected papers for this ingredient in the latest update.
View paper

Key cautions to review

Standalone side-effect signals and combination cautions are listed separately.

Caution index
2.3
Caution band: Moderate
Caution signals
4
Side effects + combos + curated rules
Key precautions
No combination caution signal is clear enough to show right now. This does not guarantee safety.
Standalone side effects, combination cautions, and positive combos are separated below.

Standalone side effects

Renal stone formation1 papers
Side effects of calcium supplementation include renal stones.human · systematic-review
Gastrointestinal side effects, kidney stones, heart attacks1 papers
Calcium supplements cause gastrointestinal side effects, particularly constipation, and increase the risk of kidney stones and, probably, heart attacks by about 20%.human · rct
Gastrointestinal symptoms1 papers
Side effects of calcium supplementation include gastrointestinal symptoms.human · systematic-review
Gastrointestinal adverse effects1 papers
Calcium supplementation may be associated with gastrointestinal diseases.human · systematic-review

Evidence summaries

Paper IDs and full lists are private. Only study types and summaries are shown.

Key Evidence #1
Public scholarly dataCitation signal: 541
meta-analysis

This meta-analysis of RCTs supports the use of calcium plus vitamin D supplements as an intervention for fracture risk reduction in both community-dwelling and institutionalized middle-aged to older adults.

Key Evidence #2
Public scholarly dataCitation signal: 273
observational

In postmenopausal women, calcium plus vitamin D3 supplementation did not reduce either blood pressure or the risk of developing hypertension over 7 years of follow-up.

Key Evidence #3
Public scholarly dataCitation signal: 232
observational

It is confirmed that, the positive responses in salt-stressed rice seedlings to exogenous Ca were for Ca mediated improvement of ion homeostasis, antioxidant defense and glyoxalase system.

3 more summariesLimited representative sample by study type.
>
Public scholarly dataCitation signal: 229
observational

The USPSTF concludes that the current evidence is insufficient to assess the balance of the benefits and harms of combined vitamin D and calcium supplementation for the primary prevention of fractures in premenopausal women or in men.

Public scholarly dataCitation signal: 175
review

It is recommended, on the basis of the current evidence, that calcium supplementation, with concomitant vitamin D supplementation, is supported for patients at high risk of calcium and vitamin D insufficiency, and in those who are receiving treatment for osteo

Public scholarly dataCitation signal: 144
observational

Data suggest that VitK2 supplementation might improve bone quality and reduce fracture risk in osteoporotic patients, potentially enhancing the efficacy of Ca ± vitD and Mg supplementation, but data regarding the effectiveness of vitK2 and MG supplementation o

Calcium
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