Steroid use is increasing throughout Melbourne, with users turning to needle exchange programs and vending machines, and putting themselves at serious risk, as they chase fit-looking bodies.

Bodybuilders and young men keen to look fit are driving the increase, with reports that some users access up to 600 syringes at a time and later distribute them at gyms.

A recent report from Youth Projects' harm minimisation group Foot Patrol revealed an increase in steroid use in Melbourne, but especially in Broadmeadows.

A survey of almost 900 drug users found that, in the CBD, steroids are the fifth-most common substance clients use. In the north-western suburbs, it is ranked third.

In both locations, it ranks higher than cocaine.