Using many of the diagnostic procedures applied in conventional medical assessment, osteopaths seek to restore the optimal functioning of the body, where possible without the use of drugs or surgery. Osteopathy is based on the principle that the body has the ability to heal, and osteopathic care focuses on strengthening the musculoskeletal systems to treat existing conditions and to prevent illness. Osteopaths' patient-centred approach to health and well-being means they consider symptoms in the context of the patient's full medical history, as well as their lifestyle and personal circumstances. This holistic approach ensures that all treatment is tailored to the individual patient.