One area of concern is the growing problem of heavy metal contamination found in fish, specifically mercury. In areas where contamination is possible, fish oil supplements may represent a safer option. According to the Australia New Zealand Food Standards Coc/efish with higher levels of mercury include: swordfish, southern bluefin tuna, barramundi, ling, orange roughy, rays and shark. Fish considered to have lower levels of mercury include: mackerel, silver warehou, atlantic salmon, canned salmon and canned tuna in oil, herrings and sardines.
People with bleeding disorders should take fish oil supplements under medical supervision. Suspend use of high dose supplements (> 10 g) 1 week before major surgery.
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