6 fish to avoid buying: High in mercury and toxic | April 25, 2025

This is a famous fish that contains a lot of omega-3 and omega-6, so many mothers buy it for their children to eat. However, if it is farmed salmon, it will be fed a lot of fat and industrial food to make the fish bigger. Therefore, it contains a lot of calories and saturated fat but few minerals.

Moreover, the ratio of omega-3 and omega-6 in farmed salmon is also lower. In some cases, if the salmon farm does not ensure hygiene, the salmon is also contaminated with toxic substances such as dioxin and PCB.

1. Tuna

Although tuna is rich in vitamin D, omega-3 acid, calcium, iron, etc., according to experts, the mercury content in tuna is 7 times higher than in other types of fish that contain a lot of mercury. Therefore, it is best to eat only moderate amounts to avoid harming your health.

2. Salmon

Salmon contains many harmful fatty acids similar to lard, so eating a lot can cause high blood cholesterol levels.

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