The Olympics has reignited a century-old debate about sex categories in sport — and what happens when policy doesn't align with biology. 

A look at the Legionnaires' disease outbreak in Melbourne. Also, a response to union calls for reproductive leave to support women going through menopause. 

Why people with type 1 and type 2 diabetes are at an increased risk of severe injuries. 

And the history of Hepatitis E, which one expert says Australia needs to take more seriously.