PT - JOURNAL ARTICLE AU - Yagev, Yaron AU - Koren, Gideon TI - Eating fish during pregnancy. Risk of exposure to toxic levels of methylmercury. DP - 2002 Oct 01 TA - Canadian Family Physician PG - 1619--1621 VI - 48 IP - 10 4099 - http://www.cfp.ca/content/48/10/1619.short 4100 - http://www.cfp.ca/content/48/10/1619.full SO - Can Fam Physician2002 Oct 01; 48 AB - QUESTION: One of my pregnant patients consumes four cans of tuna a week. She became very concerned when she read that tuna contains methylmercury, which is toxic to the fetal brain. How should I advise her? ANSWER: Fresh tuna might contain toxic levels of methylmercury, but levels are much lower in canned tuna. Reassure your patient that eating canned tuna will not harm her or her baby.