A new fish calculator allows you to determine if the amount of salmon you’re eating each week is actually safe.

Experts have long considered seafood to be a healthy option due to its high levels of proteins, vitamins and omega-3 polyunsaturated fatty acids.

But it is also known to put humans at risk of exposure to dangerous chemicals with rising pollution levels in the sea.

These toxic compounds are known to have harmful effects on the body, and in some cases too much can be fatal, scientists claim.

However, the new tool can instantly work out someone’s average exposure to a range of pollutants – giving them time to change their dietary habits.

You can try the calculator for yourself below.