Preventive medicine encompasses many different facets of healthcare that help an individual remain healthy and prevent possible health problems. This can include medical screenings, diagnostic testing, and the establishment of positive lifestyle habits. Through the use of annual physical exams, yearly screenings for potentially dangerous diseases, and advice on how to live a healthier, more invigorating lifestyle, doctors can help their patients prevent common health problems that reduce their quality of life or prevent them from doing the things they enjoy. With preventive health measures, patients are able to prevent many of the conditions that may have been a problem for their parents or other family members.