Tag: Lactococcus lactis

Gut bacteria can synthesize vitamin K2, a form of vitamin K essential for bone and cardiovascular health. While our diet provides a primary source of this vital nutrient, certain probiotic bacteria, both in our gut and in fermented foods, significantly contribute to our body's vitamin K levels. This article explores exactly which probiotics produce vitamin K to help you make informed choices for your diet and supplements.

While vitamin K1 (phylloquinone) is sourced from leafy greens, research shows that vitamin K2 (menaquinone) is predominantly of bacterial origin. This bacterial synthesis happens both within the human gut microbiome and during the fermentation of certain foods, contributing significantly to our overall vitamin K status. The exact amount absorbed and its contribution to daily needs, however, is a complex topic influenced by the specific bacteria involved and location in the gut.