Flank steak is a popular cut of beef that is known for its rich flavor and tender texture. But did you know that it is also a great source of nutrients? In this article, we will take a closer look at the nutritional benefits of flank steak.


Flank steak is a great source of protein, which is essential for building and repairing tissues in the body. A 3-ounce serving of flank steak contains about 22 grams of protein, making it an excellent choice for athletes and fitness enthusiasts.

Vitamins and Minerals

In addition to protein, flank steak also contains several important vitamins and minerals. These include:

Vitamin B12

Flank steak is a rich source of vitamin B12, which plays a crucial role in the production of red blood cells and DNA. A 3-ounce serving of flank steak contains about 2.5 micrograms of vitamin B12, which is more than 100% of the recommended daily intake.


Zinc is another important nutrient that can be found in flank steak. This mineral plays a key role in immune function, wound healing, and DNA synthesis. A 3-ounce serving of flank steak contains about 3 milligrams of zinc, which is about 25% of the recommended daily intake.


Iron is essential for the formation of hemoglobin, which carries oxygen throughout the body. Flank steak is a good source of iron, with a 3-ounce serving containing about 2 milligrams.

  • Calcium – Flank steak does not contain any calcium.
  • Magnesium – Flank steak contains small amounts (around 15mg per serving) but not enough to be considered significant.
  • Potassium – One serving (3 ounces) of flank steak contains about 300 mg of potassium, which is about 6% of the recommended daily intake.

Fat Content

While flank steak is a great source of protein and other nutrients, it is also relatively high in fat. A 3-ounce serving contains about 8 grams of fat and 3 grams of saturated fat. However, most of the fat found in flank steak is monounsaturated and polyunsaturated, which are considered healthy fats.


Flank steak is a nutrient-dense food that provides a range of vitamins and minerals. It is particularly high in protein, vitamin B12, zinc, and iron.

While it is relatively high in fat, most of the fats found in flank steak are healthy fats. So next time you’re looking for a delicious and nutritious meal, consider adding flank steak to your menu!