Avoid These 6 Fatty Fish Types Contaminated with Heavy Metals: The Second Type Contains High Levels of Mercury, Stay Away

If you come across these types of fish while shopping at the market, don't be too eager to buy them because they tend to contain heavy metals, especially mercury, which can have negative effects on your health if consumed in large amounts.

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6 types of fish to avoid due to heavy metal contamination

Swordfish: Swordfish is naturally very good for human health. However, for various reasons, salmon farming is becoming very popular nowadays. Salmon are fed industrial food to produce larger, fatter fish with high calories and saturated fat but less essential minerals for the body. The amount of omega 3 and omega 6 in farmed salmon is also lower.

Farmed catfish in confined environments: Catfish is a type of fish that Vietnam has the opportunity to export, increasing its economic value. However, when testing for crystal violet and malachite green in the United States, the results were not as expected. Unfortunately, the US lists catfish as one of the types of fish that do not guarantee quality and belong to the 6 most mercury-contaminated fish that you should know. Therefore, you should limit the consumption of these fish, especially when they are farmed in confined environments for long periods of time.

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Oily fish: According to nutrition experts, oily fish that have grown to a large size and are fed with hormones to increase weight for high profits are considered unclean and have a risk of mercury contamination. Readers should consider choosing other options.

These farmed oily fish have a high risk of mercury contamination, so they are extremely toxic. Therefore, even if this type of fish is sold cheaply, you should never be greedy.

Snakehead fish: Snakehead fish is a type of fish that is both prone to mercury contamination and considered unclean because they absorb industrial and agricultural waste through water sources.

Chilean sea bass: Although Chilean sea bass is a fish rich in omega 3, you should also limit the consumption of this fish because it has a very high mercury content, exceeding the permissible limit by up to 86%. Readers should consider choosing other options. Snowy fish with black stripes are still safe, but you can only eat them once a week and not eat any other seafood.

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Poison pufferfish: Poison pufferfish is an extremely toxic fish that can kill humans in an instant. However, many places, especially Japan, consider pufferfish as a delicacy. They process it into a dish loved by many people. Of course, during the processing, they have detoxified the pufferfish. But still, this is a dangerous dish for the brave.

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Frequently asked questions

Fatty fish such as salmon, tuna, and sardines can contain high levels of contaminants, including heavy metals like mercury and lead. Consuming too much of these contaminants can be harmful to your health, leading to issues such as brain damage, impaired development in children, and an increased risk of heart disease.

The six types of fatty fish that are particularly high in contaminants are: King mackerel, Shark, Swordfish, Farmed salmon, Bluefin tuna, and Tilefish. These fish tend to have higher levels of heavy metals and other toxins due to their position in the food chain and the accumulation of contaminants from their environment.

Heavy metals enter the water through various industrial and agricultural activities, such as factory pollution and runoff from farms. The fish absorb these metals through their skin and gills, and the contaminants accumulate in their flesh over time.

Fatty fish are a good source of omega-3 fatty acids, which have been linked to a range of health benefits, including improved heart health, better brain function, and reduced inflammation. However, it’s important to choose fish that are lower in contaminants and to eat them in moderation as part of a balanced diet.

To reduce your exposure to contaminants, choose wild-caught fish over farmed fish whenever possible, as wild fish tend to have lower levels of toxins. Also, vary the types of fish you eat and opt for smaller, shorter-lived fish, which have had less time to accumulate high levels of contaminants.

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