This is the big, scary thing everyone talks about. Mercury is a heavy metal that builds up in larger fish. Tuna is a predator, so it collects more mercury than, say, a sardine.
Too much mercury isn’t good for your nervous system. It’s especially risky if you’re pregnant, nursing, or a small child. For the rest of us? It’s about dose, not just poison.
Think of it like coffee. One cup is fine. Four pots? You’ll vibrate into another dimension. Tuna is similar—moderation is your friend.
Light vs. Albacore: The Showdown
Here’s where it gets tricky. Not all tuna is created equal. Light tuna (usually skipjack) has much less mercury. Albacore (white tuna) has about three times more.
Four cans of light tuna a week? Probably fine for most adults. Four cans of albacore? You might want to slow your roll. The FDA and EPA suggest no more than one serving of albacore per week for women of childbearing age.
So, your plan depends on which can you grab. Check the label. Your future self will thank you.