Should tuna have a warning label addressing that it contains mercury?

Yes, most types of tuna should have a warning label addressing that it contains mercury because tuna, especially certain species such as bluefin tuna, can contain elevated levels of mercury. Mercury is a toxic substance that can accumulate in fish tissues and pose health risks when consumed in high amounts. To ensure consumer safety, it is essential for tuna products to carry warning labels informing consumers about potential exposure to mercury.