The dark side of tuna sandwiches

"NOW with Bill Moyers" examines why the U.S. Food and Drug Administration hasn’t warned the public about dangerously high levels of mercury in tuna. The program airs Friday at 8 p.m. on KSPS, Channel 7.

Washington state’s Department of Health goes farther than the FDA, warning women of child-bearing age and children under 6 to limit how much tuna they eat. Click here to read the recommendations, view a chart of tuna limits by body weight and study the symptoms.