UK consumers have been advised to avoid several brands of soy sauce after a Food Standards Agency study uncovered high levels of carcinogenic chemicals in nearly a quarter of the products sampled. Last year, the FSA studied 100 samples of soy sauce and discovered the cancer causing chemical 3-MCPD in 22 of them, at levels far beyond those prescribed by an EC limit due to be implemented next April. Around 65% of the dangerous samples also contained the chemical 1,3-DCP, which is believed to damage DNA and thus cause cancer if it is consumed over a long period of time.