Beef liver

“Eat your liver, it’s good for you,” may be the understatement of all time. In 1934, three physicians won the Nobel Prize in Physiology or Medicine for discovering that liver successfully treated pernicious anemia.

Liver is the most commonly consumed organ meat in the US—and for good reason: it’s one of the most nutrient-dense foods in existence. Liver is held sacred by many African tribes, and practically every cuisine has liver specialties. It simply contains more nutrients, gram for gram, than any other food:

• Liver is nature’s most concentrated source of vitamin A (retinol)
• It contains an abundant, highly usable form of iron
• Three ounces of beef liver contains almost three times as much choline as one egg
• Liver is one of the best sources of copper, folic acid, cholesterol, and purines
• It also contains a mysterious “anti-fatigue factor,” making it a favorite among athletes

The liver is often described as an organ that “filters” your blood of toxins, which may seem concerning in terms of eating it. In reality, laboratory analysis has proven that liver is actually completely safe for consumption and has no higher concentration of toxins than the rest of the body. This is due to the fact that your liver is not really a “filter,” but more of a chemical processing plant, rendering toxins inert and shuttling them out of your body. If your liver contains large amounts of toxins, so do you! And the same goes for the animals you consume. What this means is, the cleaner the animal whose organs you are consuming, the cleaner your food will be, whether it’s a steak or an organ.

In addition to the iron that prevents anemia, beef liver is a rich source of vitamin A, B vitamins and zinc. Unfortunately, it's also very high in cholesterol.

	APPLE (100 g)	CARROTS (100 g)	RED MEAT (100 g)	BEEF LIVER (100 g)
Calcium	3.0 mg	3.3 mg	11.0 mg	11.0 mg
Phosphorus	6.0 mg	31.0 mg	140.0 mg	476.0 mg
Magnesium	4.8 mg	6.2 mg	15.0 mg	18.0 mg
Potassium	139.0 mg	222.0 mg	370.0 mg	380.0 mg
Iron	.1 mg	.6 mg	3.3 mg	8.8 mg
Zinc	.05 mg	.3 mg	4.4 mg	4.0 mg
Copper	.04 mg	.08 mg	.18 mg	12.0 mg
Vitamin A	None	None	40 IU	53,400 IU
Vitamin D	None	None	Trace	19 IU
Vitamin E	.37 mg	.11 mg	1.7 mg	.63 mg
Vitamin C	7.0 mg	6.0 mg	None	27.0 mg
Thiamin	.03 mg	.05 mg	.05 mg	.26 mg
Riboflavin	.02 mg	.05 mg	.20 mg	4.19 mg
Niacin	.10 mg	.60 mg	4.0 mg	16.5 mg
Pantothenic Acid	.11 mg	.19 mg	.42 mg	8.8 mg
Vitamin B6	.03 mg	.10 mg	.07 mg	.73 mg
Folic Acid	8.0 mcg	24.0 mcg	4.0 mcg	145.0 mcg
Biotin	None	.42 mcg	2.08 mcg	96.0 mcg
Vitamin B12	None	None	1.84 mcg	111.3 mcg