Foodborne parasites are organisms that can enter the human body through contaminated food or water. Unlike bacteria or viruses, these parasites can sometimes survive inside the body for extended periods without causing immediate symptoms. They are most often linked to undercooked meat, unsafe drinking water, raw seafood, and fruits or vegetables that have not been properly washed before consumption.

Among the most well-known foodborne parasites are tapeworms, Toxoplasma gondii, Giardia, and Trichinella. Different parasites are commonly associated with specific food sources. Some can be found in raw or undercooked pork, beef, or wild game, while others are spread through contaminated water supplies or poorly cleaned produce. Raw fish and seafood may also carry parasites if they are not handled, stored, or prepared correctly.

The symptoms of a parasitic infection can vary widely depending on the organism involved. Common signs include stomach cramps, diarrhea, nausea, bloating, fatigue, and unexplained weight loss. While some infections remain mild, others can lead to more serious health complications, particularly in children, older adults, and individuals with weakened immune systems.

To reduce the risk of foodborne parasites, health experts advise thoroughly cooking meat to safe internal temperatures, carefully washing fruits and vegetables, and drinking clean, safe water, especially when traveling. Maintaining proper kitchen hygiene is equally important, including washing hands regularly, cleaning cutting boards and utensils, and preventing cross-contamination between raw meat and ready-to-eat foods. Although foodborne parasites are less common in many developed nations, they continue to be a significant food safety concern around the world.