Tonic investigates popular mineral supplement selenium – worth it or waste of time?
Australians have some of the most expensive urine in the world due to the vast amounts of supplements we consume, from herbs to vitamins to minerals. The question is, are they saving our lives, wasting our time (and money) or worse, harming us? Casey Beros investigates one of the most popular mineral supplements – selenium. We get selenium indirectly from the soil in the form of things like wheat and beef, and there’s been a belief that low selenium levels in the blood – or serum selenium levels – are linked to cancer risk. So how much do we need?

Tonic TV | T-S054 | S01E08