K2 refers to a group of vitamin K forms called menaquinones. A nutrient’s role in the body is not proof that eating one food prevents a disease. See the NIH resource and our research context.
What is vitamin K2?
K2 refers to a group of vitamin K forms called menaquinones. A nutrient’s role in the body is not proof that eating one food prevents a disease. See the NIH resource and our research context.
By Happy Natto · Updated September 17, 2026