Final answer:
Mercury poisoning is likely if someone becomes ill after eating tuna due to the high levels of mercury that can be found in larger species of tuna. This condition stems from biomagnification within the food chain, and the EPA advises against the consumption of high-mercury fish for vulnerable populations.
Step-by-step explanation:
If someone becomes ill after eating tuna, they are likely suffering from mercury poisoning. This condition is associated with the ingestion of seafood that contains high levels of mercury, a result of biomagnification. Tuna, especially larger species like tuna steaks and sushi, can contain significant amounts of mercury because they are higher up the food chain and accumulate mercury from the smaller fish they consume.
Mercury poisoning can manifest symptoms such as impairment of peripheral vision, coordination problems, speech impairment, and muscle weakness. Pregnant individuals and young children are specifically advised by the United States Environmental Protection Agency (EPA) to avoid high-mercury fish to prevent potential health risks. In any event where mercury poisoning is suspected, it’s crucial to seek medical attention.