The reason would be the consumption of a banned fish for human consumption in countries like Colombia and Brazil, because its body has the ability to accumulate mercury acquired by the environment.
Peru: The brazen serpent that is poisoning the Amazon
June 16, 2016
Recent report finds pollution levels caused by oil spills in the northeastern Amazon region of Peru: has been found mercury and cadmium in the blood and urine of people of Cuninico and San Pedro (Loreto)
Peru: Petróleo e mineração unidos contra áreas naturais protegidas
August 18, 2016
Petroleum and mining, after destroying and contaminating everything they touched, now want to invade Peru’s national parks.[:]
Saweto's daughter, from Peru, persists in her fight for justice
October 20, 2020
Diana Ríos Rengifo took on the defense of the Peruvian Amazon after the murder of her father, a well-known Asheninka leader in the fight against illegal loggers. The trees in Saweto, a community located near the Peruvian border with Brazil, are highly coveted on the market and are threatened by indiscriminate logging.