Fish is often praised as one of the healthiest foods you can eat—rich in protein, omega-3 fatty acids, and essential nutrients. But not every part of a fish is equally safe. Some parts can carry hidden risks that many people overlook.

The first part to avoid is the fish liver. While it may contain vitamins, it can also store high levels of toxins, especially in larger or older fish. These toxins build up over time and can pose risks if consumed frequently.

Next is the fish head, particularly in certain species. It can accumulate heavy metals like mercury, which may affect the nervous system when eaten regularly. For pregnant women and children, this risk is even more concerning.

Another part to be cautious with is the skin. Although crispy fish skin is popular, it can contain pollutants from the water the fish lived in. These include chemicals that may contribute to long-term health issues if consumed in large amounts.

Fish intestines and organs should also be avoided unless properly cleaned and prepared. They can carry bacteria and parasites that increase the risk of foodborne illness. Improper handling makes this risk even higher.

It’s important to remember that not all fish are the same. Wild-caught fish from clean waters generally carry fewer contaminants than those from polluted environments. Still, moderation is key.

To stay safe, focus on well-cleaned fillets from trusted sources. Remove organs, limit consumption of high-risk parts, and vary the types of fish you eat.

Fish can absolutely be part of a healthy diet—but knowing which parts to avoid helps you enjoy the benefits without exposing yourself to unnecessary risks.