One food category that can carry harmful parasites is raw or undercooked fish, including fish used in sushi, sashimi, ceviche, and similar dishes. The CDC explains that foodborne parasites can be transmitted through undercooked fish and other seafood, as well as undercooked meat, raw aquatic plants, and contaminated raw vegetables. This does not mean that every piece of fish contains parasites or that people should stop eating fish. Fish remains an important source of protein and other nutrients, but preparation makes a major difference to food safety. The FDA specifically notes that raw fish is more likely to contain parasites or bacteria than properly cooked fish. The risk can vary depending on the species, source, handling practices, and whether appropriate parasite-control procedures were followed before the food reached the consumer.
Other foods can present similar concerns when they are raw, undercooked, or improperly washed. Undercooked meat can transmit certain parasites, while raw aquatic plants such as watercress and contaminated vegetables can also be potential sources. One of the simplest ways to reduce risk is thorough cooking. The CDC recommends cooking fish to a safe internal temperature of 145°F (63°C), while appropriate temperatures for different meats vary. Washing fresh produce under running water is also an important food-safety practice, although washing cannot eliminate every possible contaminant. People who are pregnant, older, or have weakened immune systems should be especially careful because foodborne infections can be more serious for these groups.
The good news is that you do not need to become afraid of your favorite foods. Smart preparation, proper hygiene, and reliable sourcing can significantly reduce foodborne risks. Choose reputable food suppliers, keep raw seafood and meat properly refrigerated, prevent cross-contamination, wash fresh produce, and cook foods thoroughly when parasite risk is a concern. If you regularly consume raw fish or seafood, understanding how it has been handled and prepared is particularly important. The goal is not to eliminate nutritious foods from your diet, but to enjoy them responsibly and safely. Disclaimer: This article is for general educational and informational purposes only and does not constitute medical diagnosis, treatment, or personalized dietary advice. Parasite risk varies according to the food, source, geography, handling, and preparation method. Some health claims may be general, exaggerated, or unauthenticated, so important information should be verified through reliable medical and food-safety sources and qualified healthcare professionals.
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