The selenium in certain fish (particularly, it seems, tuna) may be enough to offset the adverse effects of the mercury present (known as the "health benefit val

The selenium in certain fish (particularly, it seems, tuna) may be enough to offset the adverse effects of the mercury present (known as the "health benefit value of selenium (HBVSe)": https://edis.ifas.ufl.edu/publication/FS437 https://edis.ifas.ufl.edu/publication/FS437