What Do Vitamins D & K Have in Common?

Vitamin D and vitamin K are both fat-soluble vitamins that are absorbed via the small intestine. They are both stored in the body's adipose tissue and in the liver.

Toxicity

• Both vitamins D and K can be toxic if taken in large amounts. Vitamin D in excess can result in calcium precipitation in soft tissue, and the formation of kidney stones. An excess of vitamin K, in supplement form, can break down red blood cells and may damage the liver.

Bone Health

• Vitamin D and K are important for healthy bones and work in synergy. Vitamin K activates bone proteins and helps them bind with calcium. Low levels of vitamin K have been linked with low bone mineral density. Vitamin D regulates the body's absorption of calcium and helps maintain its calcium levels.

Facts

• Neither of these two vitamins will be lost during any cooking processes. Both are needed by the body in small amounts. The only food that contains both vitamin D and K is liver.