Causes symptoms within 2 minutes to 2 hours of eating the fish. The most common symptoms are rash, diarrhea, flushing, sweating, headache, and vomiting. Burning or swelling of the mouth, stomach pain, and a metallic taste may also occur.

There are two types of food poisoning you can get from eating fish. They are ciguatera poisoning and scombroid poisoning. Ciguatera poisoning symptoms include abdominal cramps, nausea, vomiting, and diarrhea. Symptoms can progress to headache, muscle aches, and itchy, tingly, or numbness of the skin.

Symptoms generally appear within minutes to an hour after eating affected fish. They typically last 3 hours, but can last several days. The following are the most common symptoms of scombroid poisoning. However, each individual may experience symptoms differently.

Symptoms usually resolve completely within a few hours to 3 days after shellfish ingestion. There are no known complications (or chronic sequelae) from diarrhetic shellfish poisoning.

Symptoms occur rapidly, usually within an hour of eating spoiled fish, and typically include flushing, itching, rash, headache, rapid or irregular heartbeat, dizziness, sweating, burning of the mouth and throat, diarrhea, nausea, vomiting, and abdominal cramps.

4-48 hours

Symptoms can occur within half an hour to two hours after consuming the affected shellfish and include numbness and tingling of the lips and extremities and gastrointestinal symptoms.

In people, consumption of domoic acid causes nausea, diarrhea, and abdominal cramps shortly after eating tainted shellfish. Within 48 hours this can develop into headache, dizziness, confusion, motor weakness, and in severe cases, short-term memory loss, coma, and death.

Crab may be lower in mercury than many other kinds of seafood, but it can still be a concern depending on how it is caught and prepared. Brown crab meat can also have high levels of cadmium, which is toxic if you take in too much. Crab also has a good bit of sodium (237 milligrams in a 3-ounce portion).

Rich in vitamins and minerals, crab meat is also low in fat and contains Omega-3 polyunsaturated acids. Helps provide protection from heart disease and aids brain development. Some research suggests that Omega-3 also inhibits aggressive behaviour. And it’s not just any old Omega-3 – it’s the long chain variety.

Non-fried fish and shellfish such as shrimp, crab and lobster are lower in saturated fat and a healthy alternative to many cuts of meat.

Though hard-boiled eggs are high in cholesterol, studies show that dietary cholesterol does not negatively impact blood cholesterol in most people. In fact, eggs have been found to improve cholesterol profiles by increasing “good” HDL cholesterol.

Some shellfish such as cockles, mussels, oysters, scallops and clams are all low in cholesterol and in saturated fat and you can eat them as often as you like.