In Australia, most adults can safely eat 2-3 serves (around 200-300g) of canned tuna per week, as it's generally low in mercury compared to fresh tuna, but pregnant women and young children need to be more cautious, sticking to lower-mercury fish or fewer portions. It's best to vary your fish intake for optimal nutrition and to follow the Food Standards Australia New Zealand (FSANZ) guidelines. NSW Food Authority +4
Canned tuna & salmon
It's generally safe for all population groups, including pregnant women, to consume 2-3 serves of any type of tuna or salmon a week, canned or fresh.
You can eat tuna regularly in moderation as part of a healthy and balanced diet. Canned tuna, particularly yellowfin and skipjack varieties that is caught using sustainable pole-and-line methods, is naturally low in mercury.
How much depends on the type of tuna you eat. Canned light tuna contains the least amount of mercury, and the FDA suggests limiting yourself to no more than 12 ounces (oz) a week, or no more than three 5-oz cans.
However, according to the NHS, which states a healthy, balanced diet should include at least two portions of fish a week, there's nothing there to say you can't eat tuna every day, unless you're trying for a baby, or pregnant.
Like most foods, it's okay to eat tuna in moderation. “According to the FDA, the average adult can safely eat about six to nine ounces of tuna per week,” says Dr. O'Neill. “That typically works out to one to two cans, depending on the size.”
However, overconsumption of fish with high levels of organic mercury, such as tuna, can cause methylmercury poisoning and a variety of abnormal central nervous system-related symptoms such as paresthesia, ataxia, hearing impairment, and progressive constriction of the visual fields12-15).
The Takeaway. Eating canned tuna, particularly light (skipjack) varieties, daily is typically safe for most people due to its low mercury content and high levels of beneficial omega-3 fatty acids and lean protein.
If you're concerned about limiting the amount of mercury you consume, and if you've eaten no other fish during the week, Consumer Reports says up to 12 ounces a week of Bumble Bee Chunk Light, Chicken of the Sea Chunk Light, Safe Catch Wild Elite, and StarKist Chunk Light tunas are the safer choices among the products ...
Initial signs and symptoms, such as fever, chills, shortness of breath, metallic taste, and pleuritic chest pain, may be confused with metal-fume fever, which is caused by cadmium exposure. Other possible symptoms include stomatitis, lethargy, confusion, and vomiting.
To limit mercury intake from tuna, here are the guidelines: Best choice: Eat 2 to 3 servings per week of canned light skipjack tuna. Good choice: Eat 1 serving per week of yellowfin tuna or white albacore tuna. Choice to avoid: Don't eat bigeye tuna.
The most common symptoms are rash, diarrhea, reddening or flushing of the face and sometimes the neck, arms, and upper part of the body, sweating, headache, and vomiting. Burning sensation or swelling of the mouth, difficulty swallowing, stomach pain, and heart palpitations may also occur.
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. Canned tuna and a variety of other types of non-canned tuna can be consumed according to the recommendations in the Australian Dietary Guidelines.
5 Ways to Make Your Canned Tuna Healthier, According to Registered Dietitians
Researchers from Chalmers University of Technology have come up with a novel approach to packaging canned tuna infused in the water-based solution of amino acid cysteine. It was shown to remove up to 35 percent of the accumulated mercury in canned tuna, significantly reducing human exposure to mercury via food.
Omega 3s
These are the good fats that keep your heart happy and healthy. Tuna is brimming with two types of omega-3 fatty acids, DHA and EPA, which have been linked to reduced inflammation, improved brain function, and a lowered risk of heart disease.
Some tuna cans that say do not drain because they don't add oil, water, fillers, preservatives, and GMO soy broth. Cans that say do not drain contain only tuna or sometimes salmon. They only have natural occurring fish oils and juices and those are rich in omega threes.
Oil vs Water
Tuna packed in water will contain fewer calories and less fat but also allows for the loss of omega 3 fatty acids to occur. Water-packed also dilutes the natural juices and flavors contained within the fish and can lead to a more rounded and less refined taste.
Based on the FDA's recommendation, the average adult can eat 2-3 cans of light tuna such as our Wild Planet Skipjack Wild Tuna each week without any concern. That's about 4-6 tuna sandwiches depending on your tuna salad recipe and how robust you like your sandwiches.
Treatment focuses on removing mercury from your body and could include receiving:
Larger, older fish tend to have more mercury than younger fish. Fish that eat other fish have the most mercury. o In the ocean, these include sharks and swordfish. o In lakes and rivers, bass generally have the highest levels of mercury.
Safe Catch's Original Elite Wild Tuna. Safe Catch Elite Tuna, simply the lowest mercury tuna of any brand.
All StarKist Tuna is well below FDA's 1ppm. We follow a robust testing policy in all of our plants and can assure you that StarKist Tuna is safe to eat and falls well below FDA's stringent requirements.
Halibut, grouper, mahi-mahi, albacore tuna and canned tuna fall under the FDA's “good choices” category and should be eaten no more than once a week. Swordfish, orange roughy and bigeye tuna are best avoided, as they contain the highest levels of mercury.