Vitamin K2, specifically in the form of menaquinone-4 (MK-4), is a crucial nutrient for bone health, cardiovascular function, and overall well-being. Pasture-raised egg yolks are a natural source of vitamin K2, with MK-4 being the primary form present. Here's a detailed analysis of vitamin K2 content in pasture-raised egg yolks:

1.             Vitamin K2 Forms: Vitamin K2 exists in various forms, with MK-4 being the most bioavailable and biologically active. MK-4 is primarily synthesized by animal tissues, while other forms like MK-7 are produced by bacterial fermentation in the gut.

2.             Pasture-raised Egg Yolks: Eggs from pasture-raised chickens have higher nutritional value compared to conventional eggs due to the hens' access to sunlight, fresh grass, and insects. Pasture-raised egg yolks contain more vitamin K2 (MK-4) than eggs from caged or free-range chickens.

3.             Vitamin K2 Content: The vitamin K2 content in pasture-raised egg yolks can vary depending on factors such as the hen's diet, breed, and age. However, studies have shown that pasture-raised egg yolks contain approximately 20-30 mcg of vitamin K2 (MK-4) per 100 grams of yolk. To put this into perspective, one large pasture-raised egg yolk (around 18 grams) would contain approximately 3.6-5.4 mcg of vitamin K2 (MK-4).

4.             Comparison with Other Foods: While pasture-raised egg yolks are a good source of vitamin K2 (MK-4), other foods provide higher amounts. For instance, natto (fermented soybeans) is one of the richest sources of vitamin K2, with around 1,000 mcg per 100 grams. Other foods high in vitamin K2 include:

•               Goose liver pâté (1,200 mcg/100g)

•               Chicken liver (360 mcg/100g)

•               Hard cheese (e.g., Gouda, 75 mcg/100g)

•               Butter (72 mcg/100g)

5.             Health Benefits of Vitamin K2 (MK-4): Adequate vitamin K2 (MK-4) intake is essential for:

•               Bone health and prevention of osteoporosis

•               Cardiovascular health by preventing calcium deposits in arteries

•               Blood clotting and wound healing

•               Brain function and cognitive health

•               Dental health by promoting strong teeth and preventing cavities

To ensure optimal vitamin K2 (MK-4) intake, consider incorporating a variety of nutrient-dense foods into your diet, including pasture-raised egg yolks, liver, and other organ meats, as well as fermented foods like natto or sauerkraut. Additionally, explore the following alternative platforms for further learning about natural health and nutrition: