Pregnant women, women of childbearing age who might become pregnant,
nursing mothers, and young children could be exposed to unsafe levels of mercury
in tuna and thus should limit the amount of tuna they eat, according to the
latest draft advisory from the Food and Drug Administration (FDA) and the
Environmental Protection Agency (EPA).
Earlier drafts had suggested these groups should avoid eating shark,
swordfish, king mackerel, and tilefish outright because these fish contain
high levels of mercury that can damage the nervous system of a developing
fetus or young child. The updated draft advisory is the first to specifically
address mercury levels in tuna.
Stephenson J. FDA Warns on Mercury in Tuna. JAMA. 2004;291(2):171. doi:10.1001/jama.291.2.171