Mercury is a heavy metal that can cause adverse health effects. Levels of mercury in fish are measured either in parts per million (ppm) or micrograms (mcg).
You can eat skipjack and light canned tuna alongside other low-mercury fish a few times each week, but should limit or avoid albacore, yellowfin and bigeye tuna. This is true of all brands of skipjack light tuna available in the marketplace. In a study in 135 women and their infants, each additional ppm of mercury consumed by pregnant women was tied to a decrease of over seven points on their infants’ brain function test scores (12). These recommendations are based on EPA guidance and estimates of mercury in the most popular canned tunas: Canned white, or albacore (0.32 parts per million of mercury). Mercury (Hg) content behaviour was followed along the canning process in muscle samples of tuna fish to point out implications concerning canned tuna consumers. This is because tuna feed on smaller fish which are already contaminated with varying amounts of mercury.
A study by the Mercury Policy Project found a wide range of mercury levels in both light and white tuna from government-sponsored school lunch programs. Infants, children and women who are pregnant, breastfeeding or trying to conceive should limit or avoid tuna. However, it can contain high levels of mercury, a toxic heavy metal. Mercury Detox: Separating Fact from Fiction, 11 Foods and Beverages to Avoid During Pregnancy - What Not to Eat, 8 Health Foods That Are Harmful If You Eat Too Much. Excess consumption of tuna meats either fresh or canned can be the cause of fatal illness. To learn more about which fish are healthy to eat, visit our Seafood Selector. When buying tuna, opt for skipjack or canned light varieties, which do not harbor as much mercury as albacore or bigeye. Here are some examples of reference doses based on different body weights: Since some tuna species are very high in mercury, a single 3-ounce (85-gram) serving may have a mercury concentration that equals or exceeds a person’s weekly reference dose. Hg concentration increases significantly along the canning process. Wild Planet has also stated that all skipjack light tuna is lower yet in methylmercury compared to albacore. This may be due to mercury’s role in fat oxidation, a process that can lead to this illness (8). We use cookies to help provide and enhance our service and tailor content and ads. Environmental Defense Fund is a nonprofit, tax-exempt charitable organization under Section 501(c)(3) of the Internal Revenue Code. Here are some common tuna species and their mercury concentrations (1): The US Environmental Protection Agency (EPA) states that 0.045 mcg of mercury per pound (0.1 mcg per kg) of body weight per day is the maximum safe dose of mercury.
This article reviews mercury in tuna and tells you whether it’s safe to eat this fish. Therefore, it should be eaten in moderation — not every day. By continuing you agree to the use of cookies. Mercury (Hg) analysis was performed in white and dark muscle of Skipjack tuna fish. We’ll also discuss…, Do you have low testosterone? Does it mean you need to avoid all fish?
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