While in general, there are few health risks associated with cruise ship holidays, any travel health advice should always be provided on an individual basis taking into account the personal health of the traveller, and possible activities on shore trips.
Cruising is one of the fastest growing segments of the travel industry in Australia, providing options to visit many international as well as Australian ports. Ship activities can be fun and sporty if you choose, and being fit to start is helpful. If you have any pre-existing medical conditions, ensure they are being optimally managed before you go. See your treating doctor for advice or a check-up.