http://news.bbc.co.u...lth/2518311.stm
Thursday, 28 November, 2002, 00:11 GMT
Warning over fish mercury levels (excerpts)
Mercury is found in some marlin, swordfish and tuna
Eating certain types of fish can increase the risks of having a heart attack, a study suggests.
A team of international researchers has found a direct link between mercury and heart disease.
High levels of mercury are found in shark, swordfish, king mackerel and marlin. It is also found at lower levels in fresh or frozen tuna.
The researchers have suggested that people should consider eliminating fish with high mercury levels from their diet.
The UK's Food Standards Agency recently advised pregnant women and children against eating this type of fish.
There are fears that mercury can damage the nervous system of unborn infants and can increase the risks of poisoning in young children.