Vitamin K2 can be synthesized by the body in sufficient amounts
9.0Strong
evidence
evidence
The Claim
Some believe that the human body can produce enough Vitamin K2 from Vitamin K1, making supplementation unnecessary.
Origin
This misconception likely comes from the general knowledge that gut bacteria can convert some Vitamin K1 to K2, combined with the body's ability to recycle Vitamin K.
What Science Says
While the conversion of K1 to K2 does occur, research shows that the amount produced is often insufficient, especially in Western diets low in Vitamin K2-rich foods. Studies, including dietary analysis, suggest that K2 intake from food sources is important to achieving optimal levels for health benefits. Supplementation may be beneficial, particularly in populations with low dietary K2.
Verdict
Mostly False
Sources
- PMID:18083713 Conversion of phylloquinone (Vitamin K1) into menaquinone-4 (Vitamin K2) in mice: two possible routes for menaquinone-4 accumulation in cerebra of mice.
- PMID:38980631 Phylloquinone improves endothelial function, inhibits cellular senescence, and vascular inflammation.
- PMID:10540870 [Vitamin K].