Are they natty, or are they taking steroids to get buff?

Performance and image-enhancing drugs are more common than you might expect, especially if you're not enmeshed in gym culture. 

Experts are worried the medical community has fallen behind the rise in steroid use, leaving users physically and mentally vulnerable. 

Also, at-home testing kits promise to diagnose a range of illnesses from vitamin deficiency to cancers. Are they accurate?

And motor neurone disease (MND) is affecting more Australians. With the environment likely to blame, researchers are trying to pin down the culprits.