Canned light tuna is low in mercury and is considered one of the best choices for individuals that need to limit their exposure to mercury. People who are pregnant or breastfeeding can consume 2–3 servings of canned light tuna per week and children can consume 2 servings per week.
There are two main kinds of canned tuna: chunk light and solid or chunk white (albacore). Mercury levels in canned white tuna, which is exclusively albacore, are almost three times higher than those found in smaller skipjack tuna commonly used in canned light tuna products.
That's because, while canned tuna, especially light varieties, has relatively low average levels of mercury, individual cans can sometimes have much higher levels. “From can to can, mercury levels can spike in unpredictable ways that might jeopardize the health of a fetus,” says James E.
Yes. It is safe for everyone (including pregnant women) to consume canned tuna as part of their fish intake. Canned tuna generally has lower levels of mercury than tuna fillets because smaller tuna species are used and the tuna are generally younger when caught.
Skipjack are the smallest of the major tuna species, while yellowfin are larger. So, the fact the canned tuna in Australian cupboards is likely to contain smaller species is already a bonus when it comes to reducing mercury risk.
Canned light tuna is in the “Best Choices” category and it is fine to eat 2 to 3 servings per week. We recommend that you eat a variety of fish.
Since tuna is relatively high in mercury, one can per day would bring you to the FDA suggested maximum amount of mercury. Having more than that on occasion may not be a problem, but you are at risk of getting low dose sustained mercury poisoning.
Yellowfin and albacore tuna land somewhere in between, containing around 30 micrograms of mercury per 3 ounces. Given these mercury concentrations, people may safely consume three to four servings of low-mercury tuna per week. Higher mercury tuna should be restricted to one serving per week.
Cooking does not remove mercury from fish because the metal is bound to the meat. For example, a piece of tuna will have the same amount of mercury whether it is eaten raw as sushi or cooked on the grill.
Light tuna, on the other hand, can be eaten a bit more frivolously—the organization suggests no more than 13 ounces per week, or just under three cans.
For tuna varieties, skipjack earns the Best Choice label from the FDA, while yellowfin and albacore receive the Good Choice label. The FDA suggests avoiding bigeye tuna, which has the highest levels of mercury. Before consuming canned tuna, it is best to consult with your doctor if you have any questions or concerns.
Safe Catch Elite Tuna, simply the lowest mercury tuna of any brand.
Salmon is low in mercury.
Both wild and farmed Atlantic salmon have much lower mercury levels than most other fish species. Farmed salmon has on average, 0.05 micrograms of mercury per gram.
Most of the metallic mercury absorbed into the body eventually leaves in the urine and feces, while smaller amounts leave the body in the exhaled breath.
In general, it is safe for all population groups, including pregnant women, to consume 2-3 serves of any type of tuna per week (canned or fresh). Canned tuna generally has lower levels of mercury than other tuna because the tuna used for canning are smaller species that are generally caught when less than 1 year old.
Eating more than the advised amount of tuna each week can result in increased exposure to the neurotoxin. Mercury poisoning can cause several concerning neurological symptoms, including coordination loss, memory problems, seizures, and tremors.
Tuna: if you are trying for a baby or are pregnant, you should have no more than 4 cans of tuna a week or no more than 2 tuna steaks a week. This is because tuna contains higher levels of mercury than other fish. If you are breastfeeding, there is no limit on how much tuna you can eat.
Symptoms of organic mercury poisoning from long-term exposure include: Feeling numb or dull pain in certain parts of your body. Tremors (uncontrollable shaking). Unsteady walk.
Once in the body mercury has a half-life of ~3 days in the blood stream and a 90 day half life in other tissues (e.g. brain, kidneys, etc).
Canned light tuna is low in mercury and is considered one of the best choices for individuals that need to limit their exposure to mercury. People who are pregnant or breastfeeding can consume 2–3 servings of canned light tuna per week and children can consume 2 servings per week.
Canned light tuna contains the least amount of mercury, and the FDA suggests limiting yourself to no more than 12 ounces a week, or no more than three 5-ounce cans.
Still, small amounts of mercury can pose a risk to young children, unborn babies and the babies of nursing mothers, so the recommended servings of even low-mercury canned light tuna and salmon are no more than 2 to 3 servings per week of 3 to 4 ounces for folks who fall into those categories.