Liver (food)

Chicken liver being cooked.

Liver (food)

Nutritional value per 100 g (3.5 oz)
Energy	561 kJ (134 kcal)
Carbohydrates	2.5 g
Fat	3.7 g
Protein	21 g
Vitamin A equiv.	6500 μg (722%)
Riboflavin (Vit. B2)	3 mg (200%)
Niacin (Vit. B3)	15 mg (100%)
Vitamin B6	0.7 mg (54%)
Folate (Vit. B9)	212 μg (53%)
Vitamin B12	26 μg (1083%)
Vitamin C	23 mg (38%)
Iron	23 mg (184%)
Sodium	87 mg (4%)
Calf liver and chicken liver are comparable. Percentages are relative to US recommendations for adults. Source: USDA Nutrient database

Liver is a food that humans can eat. It is offal, which means it is not muscle tissue. The flavor of liver can be strong, and some people may find it too intense.

The liver stores vitamin A and other nutrients. Vitamin A is important because it helps the body produce rhodopsin, a molecule that absorbs light and is needed for low-light vision and color vision. Vitamin A also plays a key role in gene transcription (the process by which the information in a gene is used to make proteins) and helps the immune system work properly.

Since vitamin A is a fat-soluble vitamin, the body does not easily get rid of any excess. If too much is eaten, it can build up in the liver and lead to toxic levels, which is harmful to the body.

It is important not to eat too much liver, especially from carnivorous animals, because this can lead to hypervitaminosis A (too much vitamin A).