Assessing Canned Tuna Versus Mackerel: Nutrition, Safety, and Cost
This article examines canned tuna and mackerel, comparing their nutritional benefits, safety, and price points. Mackerel stands out with higher omega-3 fatty acids and vitamin D content, lower mercury levels, and a more affordable price. Spain’s Agency for Food Safety and Nutrition (AESAN) advises consumers to diversify fish choices in their diet, paying close attention to the ingredients and salt content in canned products.
Nutritional Profile and Safety Considerations
Canned mackerel contains approximately 2.67 grams of omega-3 fatty acids per 100 grams, more than double the 1.29 grams found in canned tuna of the same weight. In addition to omega-3s, mackerel provides vitamin D, vitamin B12, selenium, and high-quality protein. AESAN categorizes Atlantic mackerel as a low-mercury fish, while swordfish and bluefin tuna are recognized for their high mercury levels.
Both canned and frozen fish retain much of the nutritional value of fresh fish. AESAN recommends regularly including fish in the diet, alternating between fatty and lean varieties. The agency also emphasizes monitoring the salt levels in canned fish products to maintain a healthy diet.
“Its nutritional value is often underestimated, whereas tuna’s popularity is largely driven by marketing.” — Fran Rodriguez
Considering these points, mackerel emerges as a more advantageous and nutritious option compared to canned tuna in terms of health benefits, safety, and affordability.
This insight is valuable not only for consumers seeking a balanced diet but also for producers who may want to rethink their marketing strategies for canned fish. Following AESAN’s guidance allows consumers to make informed seafood choices, which could influence market demand—particularly increasing interest in canned mackerel.