topicVitamin K1 Bone Turnover Randomized Trial
claimConclusion The data from this post-hoc analysis do not provide evidence for the assumption that vitamin K status modifies or enhances effects of vitamin D supplementation on cardiovascular or bone parameters.
evidence level2
citationTheiler-Schwetz V (2026)
sourceVitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.
topicVitamin K1 Bone Turnover Randomized Trial
claimThese findings are in line with current guidelines, which do not routinely recommend vitamin K and D co-treatment in patients with osteoporosis.
evidence level2
citationTheiler-Schwetz V (2026)
sourceVitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.
topicVitamin K1 Bone Turnover Randomized Trial
claimBackground/objectives Vitamin K and D co-treatment may have additive effects on bone and cardiovascular health and is frequently used as an over-the-counter supplement.
evidence level2
citationTheiler-Schwetz V (2026)
sourceVitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.
topicVitamin K1 Bone Turnover Randomized Trial
claimThe primary aim of this study was to assess whether the effect of vitamin D supplementation on bone turnover markers and cardiovascular parameters is modified according to vitamin K status at baseline (i.e., serum levels of vitamin K1, MK4 and MK7).
evidence level2
citationTheiler-Schwetz V (2026)
sourceVitamin K status has no influence on the effect of vitamin D supplementation on bone turnover and cardiovascular markers: a randomized controlled trial.
topicVitamin K1 Bone Turnover Randomized Trial
claimBody weight was measured once a week, and the food efficiency ratio (FER) was calculated by dividing the increased body weight from day1 to the final day by the food intake amount during the experiment period.
evidence level4
citationKim Misung (2013)
sourceVitamin K1 (phylloquinone) and K2 (menaquinone-4) supplementation improves bone formation in a high-fat diet-induced obese mice
topicVitamin K1 Bone Turnover Randomized Trial
claimp Diet efficiency was lower in the HF group than that in the N group (<0.01), but no difference was found between the HF group and the HF-K1 and HF-K2 groups.
evidence level4
citationKim Misung (2013)
sourceVitamin K1 (phylloquinone) and K2 (menaquinone-4) supplementation improves bone formation in a high-fat diet-induced obese mice
topicVitamin K1 Bone Turnover Randomized Trial
claimThere was 2.31 ± 0.31 ng/ml of the osteoclast inhibitor, OPG, in the HF group, 2.35 ± 0.12 ng/ml OPG in the HF-K1 group, and 2.90 ± 0.11 ng/ml OPG in the HF-K2 group, demonstrating that the OPG concentration was increased.
evidence level4
citationKim Misung (2013)
sourceVitamin K1 (phylloquinone) and K2 (menaquinone-4) supplementation improves bone formation in a high-fat diet-induced obese mice
topicVitamin K1 Bone Turnover Randomized Trial
claim1 2 (,) 3 () 4 () 5 () 6 12 (–) In view of the recent increase in the aged population in Korea, emphasis has been placed on the prevention of and treatment for chronic diseases.Obesity has been studied as a factor that causes chronic diseases such as diabetes,osteoarthritis,hypertension, and cardiovascular disease,and thus, it requires management.
evidence level4
citationKim Misung (2013)
sourceVitamin K1 (phylloquinone) and K2 (menaquinone-4) supplementation improves bone formation in a high-fat diet-induced obese mice