The Benefits of Swordfish

Swordfish offers many health benefits, especially for people who are following low-carbohydrate, high-protein diets. It has no carbohydrates and contains essential amino acids and omega-3 fatty acids. However, it belongs to a small group of fish that are not recommended for consumption by pregnant or lactating women.

Protein

Swordfish serves as an excellent source of protein. Each 6-ounce portion provides you with 33.4 grams of protein. This provides 64 percent of the daily protein requirements for an average 130-pound individual, or 46 percent for an average 180-pound individual, according to guidelines reported by the Iowa State University Extension. Your body uses protein to produce enzymes, transport oxygen and to maintain healthy tissues, including your muscles, hair and skin.

Potassium and Selenium

Swordfish also provides you with potassium and selenium, two essential minerals. Potassium acts as an electrolyte and helps conduct electricity -- an essential process for the function of your nerves and muscles. Selenium provides protection against cancer-causing free radicals, and it also helps your thyroid gland function properly. A serving of swordfish contains 98 micrograms of selenium -- almost double your daily recommended intake, according to guidelines released by the Institute of Medicine. Swordfish also provides 711 milligrams of potassium per serving, or 15 percent of the recommended daily intake.

Vitamins D and E

Swordfish provides generous amounts of the fat-soluble vitamins D and E. Vitamin D plays an important role in immune system function, and it also helps regulate your body's calcium levels to promote healthy bones. Vitamin E helps your cells utilize vitamin K properly, and it also provides protection against free radicals. A 6-ounce portion of swordfish contains 949 international units of vitamin D and 3.4 milligrams of vitamin E. This provides more than your entire daily recommended vitamin D intake, and 23 percent of the vitamin E you need daily, according to the Institute of Medicine.