I'm 5 weeks pregnant and i am craving tuna. is it okay to eat canned tuna?

Occ. light tuna or..: Tuna contains mercury which can be harmful for the developing baby. Some types of tuna have much more mercury than others- light tuna has less than albacore. Having about 2 cans of light tuna a week when pregnant seems safe. See http://www.Webmd.Com/baby/news/20060605/canned-tuna-avoid-pregnant younger tuna also has lower mercury- see http://www.Davesalbacore.Com/health_and_nutrition.Php.

Yes: It's okay to eat can tuna but in limited quantities, such as no more than once or twice a week. The absolute no-no fish to stay away from are mackerel, shark, tile, and sword.