8 Foods That May Carry Parasites If Not Properly Prepared: What You Should Know Before Eating

Proper cooking and preparation can greatly reduce the risk of foodborne parasites.

Many people enjoy fresh seafood, raw meat dishes, and traditional delicacies without realizing that some foods can naturally carry parasites if they are harvested, stored, or prepared improperly. Food safety experts emphasize that the risk comes not from the foods themselves, but from inadequate preparation. Proper cooking and careful handling remain the most effective ways to reduce the chance of foodborne parasitic infections.

Below are several foods that deserve extra attention before they reach your plate.

One of the most commonly discussed is freshwater eel. Because eels often live in muddy or stagnant environments, they can be exposed to various parasites throughout their lives. Experts recommend thoroughly cleaning and fully cooking eel before consumption.

Another food requiring careful preparation is freshwater snails. Although considered a delicacy in many regions, freshwater snails can carry parasites that may infect humans if eaten raw or undercooked. Proper cooking significantly reduces this risk.

Raw or undercooked beef and buffalo meat may also contain parasites depending on farming conditions and food safety practices. Consumers should purchase meat from reputable sources and cook it to a safe internal temperature.

Some traditional dishes include wild frogs and snakes, which may carry parasites commonly associated with wild animals. Health authorities recommend avoiding raw preparations and ensuring these foods are cooked completely before eating.

Freshwater fish are another food that deserves attention. Certain species may naturally host parasites, making proper cooking especially important. Sushi and sashimi should only be prepared using fish that has been processed according to food safety guidelines for raw consumption.

Raw shrimp and freshwater crab have also been associated with parasites in some regions. Traditional marinades using vinegar, alcohol, or spices may improve flavor but do not reliably eliminate parasites. Cooking remains the safest option.

The article also highlights water chestnuts and water caltrop (Trapa). Because these aquatic plants grow in muddy environments, they may carry soil-borne contaminants if not washed thoroughly. Peeling, rinsing, and cooking them before eating can help improve food safety.

Experts recommend several simple precautions:

• Buy food from trusted suppliers.
• Wash ingredients thoroughly with clean water.
• Separate raw and cooked foods to prevent cross-contamination.
• Cook meat and seafood to safe temperatures.
• Avoid eating raw freshwater animals unless they have been processed according to recognized food safety standards.

Medical professionals emphasize that these foods can still be part of a healthy diet when handled properly. Modern food safety practices—including careful cleaning, appropriate storage, and thorough cooking—greatly reduce the likelihood of foodborne parasitic infections. Rather than avoiding these foods entirely, consumers should focus on safe preparation methods and informed food choices.