Recognize the symptoms and respond correctly

Causes of fish poisoning

There are different forms of fish poisoning that can result from different causes. This includes:

1. Toxins found in fish

Some types of fish can contain natural toxins that can cause symptoms of poisoning if eaten. These include, for example, ciguatoxin, which is found in tropical reef fish, or histamine, which can be produced by bacterial growth in certain species of fish.

2. Contamination with bacteria or viruses

If fish is stored or prepared incorrectly, bacterial or viral pathogens can multiply and lead to food poisoning. Examples include salmonella or listeria.

3. Exposure to mercury or heavy metals

Some types of fish, especially large predatory fish such as shark, swordfish and pike, may contain high levels of mercury or other heavy metals, which can be harmful to health if consumed in excess. Mercury poisoning can occur, which can cause neurological symptoms such as memory problems, difficulty concentrating, and tremors.

4. Ciguatera poisoning

This poisoning occurs when a person eats fish contaminated with ciguatoxin. Ciguatoxin is produced by algae and accumulates in the fish food chain. Symptoms of ciguatera poisoning include nausea, vomiting, abdominal pain, diarrhea, headache, dizziness, and tingling in the extremities.

5. Food poisoning

This is a rare but serious form of food poisoning caused by Clostridium botulinum bacteria. Bacteria can breed in canned or vacuum-packed fish products if not handled properly. Symptoms include muscle weakness, difficulty swallowing, vision problems, and breathing problems.