Cod has been known to mankind since ancient times. There is even a book dedicated to her: “The Fish That Changed the World.” Its white tender meat helps get rid of joint pain, lowers cholesterol, and relieves hypertension. It is useful to give cod to children to protect them from rickets. Pregnant women should include cod in their diet to avoid iodine deficiency. It is especially useful for older people to eat cod to prevent osteoporosis and Alzheimer's disease. At any age, this fish is well digestible.