topicVitamin K2 Bone Markers Randomized Trial
claimBackground Osteoporosis is a metabolic bone disease characterized by decreased bone mass and increased fracture risk.
evidence level1
citationZhang Z (2025)
sourceThe effect of vitamin K2 supplementation on bone turnover biochemical markers in postmenopausal osteoporosis patients: a systematic review and meta-analysis.
topicVitamin K2 Bone Markers Randomized Trial
claimVitamin K2 (VK2) increased osteocalcin (OC; MD 1.86, 95% CI 1.17-2.56) and bone-specific alkaline phosphatase (BAP; MD 1.49, 95% CI 0.98-2.00).
evidence level1
citationZhang Z (2025)
sourceThe effect of vitamin K2 supplementation on bone turnover biochemical markers in postmenopausal osteoporosis patients: a systematic review and meta-analysis.
topicVitamin K2 Bone Markers Randomized Trial
claimIt reduced undercarboxylated OC (ucOC; WMD -1.54, 95% CI -2.44 to -0.64) and tartrate-resistant acid phosphatase (TRAP; MD -0.83, 95% CI -1.21 to -0.46).
evidence level1
citationZhang Z (2025)
sourceThe effect of vitamin K2 supplementation on bone turnover biochemical markers in postmenopausal osteoporosis patients: a systematic review and meta-analysis.
topicVitamin K2 Bone Markers Randomized Trial
claimBone turnover markers, such as osteocalcin (OC), undercarboxylated osteocalcin (ucOC), and other biochemical indicators, are important for assessing bone metabolism.
evidence level1
citationZhang Z (2025)
sourceThe effect of vitamin K2 supplementation on bone turnover biochemical markers in postmenopausal osteoporosis patients: a systematic review and meta-analysis.
topicVitamin K2 Bone Markers Randomized Trial
claimConclusions : These findings identify vitamin K-dependent carboxylation as a mechanistically specific and modifiable factor associated with skeletal fragility beyond bone mineral density, with distinct skeletal consequences across osteocalcin carboxylation states.
evidence level4
citationSharma DK (2026)
sourceVitamin K Status and Skeletal Fragility: Differential Associations of Osteocalcin Carboxylation States with Bone Strength, Geometry and Microarchitecture.
topicVitamin K2 Bone Markers Randomized Trial
claimBackground: The contribution of specific nutritional biomarkers to skeletal fragility remains poorly understood, in part because most studies include participants with metabolic conditions that obscure nutrient-specific effects.
evidence level4
citationSharma DK (2026)
sourceVitamin K Status and Skeletal Fragility: Differential Associations of Osteocalcin Carboxylation States with Bone Strength, Geometry and Microarchitecture.
topicVitamin K2 Bone Markers Randomized Trial
claimWe aimed to examine incremental contribution of six pathway-specific nutritional biomarkers.
evidence level4
citationSharma DK (2026)
sourceVitamin K Status and Skeletal Fragility: Differential Associations of Osteocalcin Carboxylation States with Bone Strength, Geometry and Microarchitecture.