Tuna

This type of fish can be contaminated by scombrotoxin, which causes flushing, headaches, and cramps. If it is stored above 60 degrees after being caught, fresh fish can release the toxin, which cannot be destroyed by cooking (and is unrelated to mercury contamination or other problems related to tuna and other fish).

Tuna has been linked to 268 scombroid poisoning outbreaks since 1990.

"You just can't cook out all the things wrong with food supply right now," CSPI's Klein says.

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