According to WebMD, "liver is one of the most nutritionally dense foods on the planet." It contains a bevy of nutrients including vitamins B and C, iron, potassium, phosphorus, folate, niacin, and riboflavin.

Beef liver provides protein and also iron. Iron is a vital nutrient during pregnancy. You'll also need more iron when pregnant because your blood volume greatly increases so your iron reserve will also need to increase to help make enough hemoglobin (via Mayo Clinic).

Your baby will use the oxygen made by the iron in your body. An insufficient amount of iron may result in you developing iron deficiency anemia which can lead to premature birth, low birth weight, and postpartum depression.

In addition, folate which includes several B vitamins as well as folic acid, is vital for the prevention of birth defects.

While there are so many healthy and nutritious vitamins found in liver, sometimes too much of a good thing can be harmful.