Liver is is high in protein, amino acids, vitamins and minerals, and is healthy when eaten sparingly. One serving of beef liver provides 40 percent of a person's recommended daily protein intake and 917 percent of recommended vitamin A intake.
Liver is high in cholesterol, and patients should avoid eating liver if they are on cholesterol-restricted diets. One serving of liver contains 90 percent of the recommended daily cholesterol intake. Pregnant women should also avoid eating liver. Heavy metals accumulate in liver tissue, and high doses of vitamin A are harmful to developing fetuses. Liver is safe and healthy for individuals who are not pregnant or on cholesterol-restricted diets.