Magnesium for Osteoporosis
Verdict: Published
Across 4 PubMed studies, the evidence for Magnesium in Osteoporosis grades Tier C — weak evidence.
C 🟠 C Weak Evidence Published
Why this grade7-layer evidence engine
⚖️
Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditableRaw score 0.43
D
C
B
A
S
← counter-evidence / ineffectiveeffective / strong evidence →
Final grade
C · Published
Confidence
76%
Broadly consistent
Evidence level
E3
Single high-quality meta-analysis
▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.432
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 無高階證據可裁決
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
PubMed studies (4)L2 · primary research & systematic reviews
Impact of magnesium on bone health in older adults: A systematic review and meta-analysis
Finding: MA of 6 cohort + 1 case-control + 5 cross-sectional (observational) studies; higher Mg intake associated with higher hip/femoral neck BMD, but no association found at other BMD sites or with fractures.
View on PubMed An update on magnesium and bone health
Finding: Narrative review (not a systematic review/meta-analysis) summarizing prior literature; author states benefit in both BMD and fracture risk across the studies reviewed.
View on PubMed Magnesium intake, bone mineral density, and fractures: results from the Women's Health Initiative Observational Study
Finding: Observational cohort (not interventional): lower dietary Mg intake associated with lower hip/whole-body BMD, but this did not translate into reduced fracture risk; intake slightly above RDA was associated with more lower-arm/wrist fractures.
View on PubMed Short-term oral magnesium supplementation suppresses bone turnover in postmenopausal osteoporotic women
Finding: Small unblinded RCT (n=20, 30 days); Mg-supplemented group showed decreased serum iPTH, increased osteocalcin, decreased urinary deoxypyridinoline vs control. Surrogate bone-turnover-marker outcome only, no BMD or fracture data.
View on PubMed Regulatory & authoritative positionsL4/L5 · FDA / EMA / NIH ODS / Cochrane / Mayo …
L4a US FDA
Supportive
NUTRIENT SUPPLEMENT source↗
L4b EU EFSA
Supportive
a cofactor of more than 300 enzymatic reactions source↗
L4c UK NHS
Cautious
You should be able to get all the magnesium you need by eating source↗
L4d TW TFDA / 衛福部
Supportive
每日食用量中鎂含量不超過600mg source↗
L4e WHO
Supportive
magnesium sulfate injections can be given to reduce the risk of eclampsia source↗
L5a NIH Office of Dietary Supplements
Supportive
Magnesium is a cofactor in more than 300 enzyme systems source↗
L5b Mayo Clinic
Cautious
People who have diets higher in magnesium have higher bone mineral densities, but people who use magnesium supplements don't get the same results. source↗
L5c Cleveland Clinic
Cautious
Magnesium stimulates bone-building cells. It also helps with vitamin D absorption. source↗
L5d Harvard Health
Cautious
Clinical trials have shown mixed results with the use of magnesium supplements to increase bone mineral density. source↗
L5e Specialty Society (condition-mapped)
Not addressed
If you eat a well-balanced diet with plenty of dairy, fish, fruits and vegetables, you should get enough of the nutrients you need every day. source↗