Discrimination against drug addicts that suffer with an addiction, only a few will receive treatment due to the complexity of health care systems. Most health care systems do not have insurance coverage for addiction recovery and many health care providers have little to no training in treating addiction. Some doctors do not feel comfortable treating an addiction due to their lack of knowledge and training of the topic. This is one of the reasons why drug dependence is difficult to recover from. Among injecting drug users, the incidence of HIV infection is higher than among other drug addicts, however punitive and discriminatory measures against
Fitness to dive and behavioural reasons. In some cases prescription drug use may have a net positive effect, when effectively treating an underlying condition, but frequently the side effects of effective medication may have undesirable influences on the fitness of diver, and most cases of recreational drug use result in an impaired fitness to dive, and a significantly increased risk of sub-optimal response to emergencies. The medical, mental and physical fitness of professional divers is important for safety at work for the diver and the other members of the diving team. As a general principle, fitness to dive is dependent on the absence