Health risks of consuming certain fish types

While fish is a highly nutritious food source rich in omega-3 fatty acids and minerals, certain types pose significant health risks due to the accumulation of toxins.

Large, long-lived predatory fish are particularly dangerous because they occupy the top of the food chain. Through biological accumulation, these fish can contain high levels of heavy metals, specifically methylmercury, lead, and cadmium. According to the U.S. Food and Drug Administration (FDA), methylmercury can cross the blood-brain and placental barriers, potentially causing damage to the central nervous system, liver, and kidneys. This poses a specific risk to pregnant women and young children, as it can lead to brain damage and developmental delays.

Additionally, some farmed fish pose risks due to intensive production methods. To achieve rapid growth in high-density environments, some facilities may overuse antibiotics such as Sulfonamide and Enrofloxacin, or use growth stimulants. Fish raised in polluted muddy bottoms also face risks of contamination from parasites and lead.