We encounter different food cultures and unique dishes on our culinary adventures in search of delectable new foods. fugu, a pufferfish, is 200 times more deadly than cyanide.
The FDA recommends avoiding shark, king mackerel, swordfish, and tilefish. Because they're high in mercury.
Too much mercury can cause kidney damage, neuromuscular effects, and death (via The World Health Organization).
Humans are responsible for most mercury emissions in the environment. Mercury accumulates in water, where fish absorb methylmercury. Worryingly, mercury stays in their systems.
PPM measures mercury levels in fish. Sardines have 0.013 ppm mercury and salmon 0.022 ppm, but swordfish have 0.995 ppm (via Healthline)
These mercury levels may seem negligible to a swordfish lover, but mercury can accumulate in the body, especially the kidneys, and take time to leave.
The FDA advises pregnant, nursing, or soon-to-be pregnant women to avoid swordfish and other fish because of high mercury levels.