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)
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.
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.