Can you get mercury poisoning from canned fish?

Canned fish and mercury risk: what experts say

Dietitians say a viral post raised questions about mercury exposure from canned fish, but the real risk depends on how often people eat fish—not just that it’s canned.

What matters most

• Frequency of intake: Mercury exposure is cumulative. People who eat fish regularly can absorb more mercury over time, while occasional servings are less concerning.
• Not just the form: Being “canned” doesn’t automatically make fish more dangerous; what matters is the mercury level in the species and a person’s overall consumption pattern.

Why it matters for shoppers

Canned fish is often chosen for convenience and affordability, and many households rely on it for protein. But the takeaway is that consumers should think in terms of their weekly or monthly eating habits, especially if they eat fish more often than average or if they’re pregnant or planning pregnancy.

Practical implication

If you’re trying to reduce mercury exposure, the article’s central point points to moderation and mindful selection as the lever—not panic about the packaging. Without more detail on specific brands or fish types, the best guidance is to manage overall fish consumption and follow reputable dietary advice for high-mercury species.

In short: mercury exposure depends on total intake over time, and dietitians emphasize considering your eating pattern when deciding how much canned fish to include.