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Home / Nutrition / Mercury in Tuna: What Type is Good and Bad?

Mercury in Tuna: What Type is Good and Bad?

author avatar Dr. Eric Berg August 21, 2021

Are all types of tuna good to consume? Check this out!


0:00 The problem with mercury

0:57 Tuna that is low in mercury

1:05 Better options to consume

1:12 Tuna that is high in mercury

1:25 Should kids eat tuna?

1:38 Dolphin and whale

1:53 Share your success story!


Some types of tuna are good to consume, and certain types are bad. This is because certain types contain 3x as much mercury. Mercury interferes with certain enzymes involving selenium.

Some fish have more selenium than others. The mercury in the environment that the fish are exposed to might not affect you too much if the fish is high in selenium. This is because selenium can counter mercury. But, if there is too much mercury in the fish, it can lock up the selenium enzymes, making them inactive.

This can create a lot of different symptoms, including:

• Tremors

• Headaches

• Nausea

• Insomnia

• Muscle weakness

• Twitches

• Mood swings


Types of tuna that have lower amounts of mercury:

• Skipjack tuna

• Canned light tuna


Better options to consume:

• Canned salmon (sockeye or pink Alaskan)

• Wild-caught sardines


Types of tuna that have high amounts of mercury:

• Albacore tuna (canned white tuna)

• Ahi tuna (yellowfin tuna and bigeye tuna)


Kids may want to only consume infrequent amounts of tuna—maybe just once a month. Certain cultures consume dolphins or whales. Both of these are going to have very high amounts of mercury.


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