On the basis of the UK Committee on Toxicology (COT) opinion, the Food Standards Agency advised that pregnant women, women intending to become pregnant and children under 16 should avoid eating shark, marlin and swordfish. One weekly portion of these fish would not be harmful for other adults. Pregnant women and women intending to become pregnant may eat to up to four medium-size cans or two tuna steaks a week. Children and other adults do not need to restrict the amount of tuna they eat. Women of reproductive age and girls should aim to consume within the range of one to two portions of oily fish a week, based on maintaining consumption of dioxins and dioxin-like PCBs below the WHO recommended maximum.