High Mercury Levels: Some canned fish, like certain types of tuna, can contain high levels of mercury, which is toxic.
High Sodium Content: Many canned fish products are packed in salty brine or have added salt, leading to high sodium content.
Preservatives and Additives: Some canned fish contain artificial preservatives, flavor enhancers, and other additives.
BPA in Cans: Bisphenol A (BPA) is a chemical used in the lining of many cans, and it has been linked to various health problems.
Low-Quality Oils: Canned fish packed in low-quality oils, such as soybean or cottonseed oil, can introduce unhealthy trans fats.
Sustainability Concerns: Fish sourced from unsustainable fisheries can contribute to overfishing and environmental degradation.
Contaminants and Pollutants: Some canned fish can be contaminated with industrial pollutants like PCBs (polychlorinated biphenyls).
Nutritional Imbalance: Relying heavily on certain types of canned fish that are low in beneficial nutrients.