Talking about testosterone

Professor Bu Yeap MBBS, PhD, FRACP
Endocrinologist, Perth, Western Australia

When we talk about testosterone, we are really looking at a hormone that acts in a range of ways at different sites in the body.

In adolescence it controls development, maturation and behaviour. In adults it is a regulator of virilisation and body composition. The question is whether in older men it has effects beyond what we already recognise, to determine aspects of