What can result from a deficiency in Vitamin K?

Vitamin K plays a crucial role in the synthesis of various proteins that are required for blood coagulation and maintaining proper bone health. A deficiency in Vitamin K leads to impaired synthesis of clotting factors, such as prothrombin and factors VII, IX, and X. This impairment results in a reduced ability of the blood to clot, leading to an increased risk of bleeding and bruising. Individuals with a deficiency may experience easy bruising, prolonged bleeding from cuts, and, in severe cases, spontaneous bleeding.

The other options relate to different physiological processes or deficiencies. Reduced red blood cell production is typically associated with deficiencies in iron, vitamin B12, or folate. Elevated blood glucose levels are primarily linked to issues with insulin or carbohydrate metabolism, rather than vitamin deficiencies. A lowered immune response is often tied to deficiencies in vitamins such as A, C, or specific B vitamins but not directly to Vitamin K. Thus, the increased risk of bleeding and bruising is the direct consequence of inadequate Vitamin K levels.