Does magnesium help bone health and osteoporosis?
Yes — 60% of the body's magnesium is stored in bone. Higher dietary and supplemental magnesium intake is associated with greater bone mineral density and lower fracture risk, especially when paired with vitamin D, K2, and adequate (not excess) calcium.
Last updated 27 June 2026
The bone-building team
Magnesium activates vitamin D, regulates parathyroid hormone, and is structurally embedded in the hydroxyapatite crystal of bone. Without it, calcium supplementation can deposit in arteries rather than bone.
Protocol for bone protection over 50
300 mg elemental magnesium + 1000–2000 IU vitamin D3 + 90–180 mcg vitamin K2 (MK-7) + dietary calcium of 1000–1200 mg/day (food preferred over supplements). Weight-bearing exercise remains essential.
Frequently asked
- What is the calcium-to-magnesium ratio?
- Aim for roughly 2:1 calcium to magnesium total daily intake (food + supplements).
- Should I stop calcium supplements?
- If you already eat dairy or fortified foods, food-first is usually safer. Discuss with your GP.
Educational content — not medical advice. Health claims comply with EU Regulation 1924/2006 and the Union Register of authorised claims (Regulation 432/2012). Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Always consult your GP or pharmacist before changing supplements, particularly if you take prescription medication or have kidney disease.