So Sad: Researchers Find 25 Percent of Fish Have Plastic in Their Guts

A recent study published in Scientific American highlights yet another reason to ditch fish and other seafood: plastic contamination.

Researchers at the University of California Davis School of Veterinary Medicine found that a whopping 25 percent of fish tested had plastic in their guts.

According to, “About a quarter of the 64 fish purchased at fish markets in Half Moon Bay and Princeton and analyzed for the study turned out to have bits of synthetic clothing in their guts.

And that’s just the latest.

Just last year, researchers found that mercury levels in tuna are 10 million times higher than seawater, with human activities since the industrial revolution to blame.

Some seafood imports are contaminated with salmonella and other microbes as a result of feeding fish a diet of feces. In fact, according to the FDA, seafood imports from China—around 27 percent of the seafood consumed by Americans—are frequently contaminated.

What’s more, a growing body of scientific evidence demonstrates that fish are sophisticated animals who exhibit intelligence, complex social structures, long-term memory, and the capacity to feel pain. Yet the fishing industry treats them as if they were nothing more than inanimate objects.

The best thing we can do to protect fish and our own health is to leave fish off our plates. Check out for delicious meal ideas and tips on making the transition to a fish-free lifestyle.