Study reveals which sushi types pose the highest toxic risks for teens

A new study has examined the levels of toxic elements in sushi. Researchers analysed the presence of cadmium, nickel, lead, mercury, and other contaminants in various types of sushi. They found that some combinations pose higher health risks than others, particularly for adolescents. The research focused on dietary exposure to harmful substances in infants, adolescents, and adults. It revealed that adolescents eating an average of eight pieces of sushi are exposed to 0.242 micrograms of methylmercury per kilogram of bodyweight. This exceeds the safe daily limit for this age group.

Maki and nigiri were found to contain higher concentrations of inorganic arsenic than sashimi. This is due to the rice used in these preparations. Additionally, sushi made with tuna showed elevated levels of mercury and methylmercury because of bioaccumulation and biomagnification in the fish.

To reduce risk, the researchers recommend sticking to eight pieces of salmon-based maki, nigiri, or sashimi. They also suggest unagi maki as a safer option. However, they strongly advise limiting any sushi containing tuna due to its high mercury content. The study highlights the safest sushi choices for minimising exposure to toxic elements. Eight pieces of salmon-based options or unagi maki are considered the lowest risk. Consumers are also reminded that other foods may contribute to daily intake of these contaminants.