37/100

Food

Large Predatory Fish

High burden — Large Predatory Fish is a significant avoidable exposure.

Tuna, swordfish, king mackerel, shark.

The breakdown

Each driver rated 0 (none) to 10 (worst)

Chemical hazard
6
Everyday exposure
5
Persistence
7

Evidence strength: strong · Detox Score = 100 − hazard×4.6 − exposure×3.4 − persistence×2.6, clamped 1–100.

What this means for you

A Detox Score of 37 places large predatory fish in the High band. The persistence rating is the standout concern here — these compounds linger in the body and environment for years. Mercury bioaccumulates up the food chain, concentrating in big long-lived predators. Small oily fish give the omega-3s with far less mercury.

Cleaner swap → Small fish: sardines, anchovies, wild salmon.
See where your whole exposure load is highest — free Exposure Score →

Frequently asked questions

Is large predatory fish a toxic exposure?

Large Predatory Fish has a Detox Score of 37 out of 100 (High burden), which means it is a significant avoidable exposure. Mercury bioaccumulates up the food chain, concentrating in big long-lived predators. Small oily fish give the omega-3s with far less mercury.

What is a safer alternative to large predatory fish?

A lower-exposure swap for large predatory fish is: Small fish: sardines, anchovies, wild salmon. Mercury bioaccumulates up the food chain, concentrating in big long-lived predators. Small oily fish give the omega-3s with far less mercury.

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