Mackerel

Mackerel

Mackerel (in Hebrew, “מקרל”) is a small-to-medium oily fish that ranks among the healthiest fish sources. Unlike large fish such as tuna or swordfish, which accumulate mercury up the food chain, mackerel — mainly Atlantic mackerel (Scomber scombrus) — offers a high concentration of omega-3 with a relatively low load of heavy metals.

Mackerel belongs to the Scombridae family and comes in different sizes: Atlantic mackerel (small-to-medium, a good mercury balance), Spanish mackerel (medium, also good), and king mackerel — a large fish with a very high mercury concentration that should be avoided.

Research-based health benefits

• Omega-3 (EPA and DHA) — an especially high concentration: 100 grams of mackerel contain about 2.5-3 grams of EPA+DHA — among the highest concentrations of any fish, higher on average even than salmon. EPA supports reducing inflammation and triglycerides; DHA is essential for brain function, the retina and the nervous system.

• Vitamin D — one of the best natural sources: 100 grams of mackerel provide about 16 mcg of vitamin D — over 100% of the daily intake. Vitamin D is essential for calcium absorption, immunity, mood and the prevention of chronic disease. Most of the Western population is deficient.

• Vitamin B12: 100 grams of mackerel provide about 19 mcg — several times the recommended daily intake. B12 is essential for forming blood cells, for myelin function (nerve insulation) and for DNA synthesis.

• Selenium: An essential antioxidant that supports thyroid function. 100 grams of mackerel cover about 100% of the daily intake.

• High-quality protein: About 19-20 grams of protein per 100 grams — highly bioavailable, with all the essential amino acids.

• Coenzyme Q10: Mackerel is one of the best natural sources of CoQ10, essential for cellular energy production and heart health.

• Niacin and potassium: Vitamin B3 for metabolism and potassium for regulating blood pressure and heart muscle function.

Downsides and health considerations

• King mackerel — avoid it: King mackerel (Scomberomorus cavalla) is a large predatory fish with a very high mercury concentration. The FDA designates it as a fish to “avoid” for pregnant women, breastfeeding women and children. Atlantic mackerel is completely different.

• High sodium in canned fish: Mackerel canned in brine can contain 300-500 mg of sodium per 100 grams — choose “no salt added” cans or rinse before eating.

• Histamine: Mackerel, like tuna and sardines, can accumulate histamine if it is not stored properly. People with histamine sensitivity should eat it right after purchase.

• Refrigeration and storage: Because of its high fat content, fresh mackerel spoils very quickly — eat it on the day of purchase or store it frozen.

Comparison with other popular fish (per 100 grams)

Culinary and practical use

• Fresh grilled mackerel: The best way — it preserves the vitamins and adds a delicate smoky flavor
• Whole mackerel in the oven: With lemon, garlic and herbs — simple and elegant
• Canned in olive oil: Convenient for quick meals; prefer olive oil over sunflower oil
• Smoked mackerel: Tasty as a spread on bread with sour cream and mustard — keep an eye on the sodium
• In a Niçoise salad: An excellent alternative to tuna with higher nutritional value

Summary

Atlantic mackerel is one of the most worthwhile fish nutritionally: relatively inexpensive, rich in omega-3 and vitamin D, and with fewer concerns about mercury than large fish. It is recommended to include it 2-3 times a week as part of a healthy diet.