You may know that cod liver oil has been used for centuries to relieve joint pain and to treat rickets, a disease that causes fragile bones in children, but it actually has a myriad of other benefits. Although cod liver oil is a fish oil supplement, it’s quite different than regular fish oil. Instead of extracting the oils from the tissue of oily fish, this oil is made by extracting oil from the the livers of cod. The liver is rich in fat-soluble vitamins like vitamins A and D, which