Many medical treatments in Canada today use drugs or surgery to treat symptoms, or the signs of illness. However, Canada has a history of therapies and treatments that are less invasive. Some of these practices are still conducted, while others seem odd or outdated. Treatment using radiation, or physical and psychological therapies still enjoy a level of popular use by medical practitioners, therapists, and patients to address a wide range of ailments – while the use of electric shocks, or ultraviolet lighting is outdated.