Annual checkups feel wise—evidence says they rarely save lives
Routine physicals on healthy people are popular, especially when free, yet a Cochrane review found general health checks did not cut deaths from cancer, heart disease, or other causes. They can raise diagnosis rates for hypertension while risking overtesting and false alarms.
A physical examination lets a practitioner hunt medical signs and symptoms, usually after a history, to inform diagnosis and treatment recorded in the chart. The routine or annual checkup screens asymptomatic people and is typically done by primary care clinicians; nurses may set baselines and flag abnormals. It is not the same as newborn visits, Pap smears, or chronic-disease follow-up. Tools range from brief exams and labs to ultrasound or mammography. Four classic actions structure the hands-on exam: inspection, palpation, percussion, and auscultation, plus vitals—temperature, blood pressure, pulse, respiratory rate—using sight, hearing, touch, and sometimes smell. Specialists narrow the survey to their system; primary care may examine genitals or defer gynecologic exams.
Despite fond public support, asymptomatic annual exams lack strong evidence of benefit for most people. Cochrane meta-analysis found routine annuals did not measurably reduce illness or death and could drive overdiagnosis and overtreatment—without denying the value of ongoing doctor contact. The American Cancer Society still recommends cancer-related checkups yearly for adults over 40 and every three years after age 20. Systematic review through September 2006 linked exams to better delivery of Pap smears, cholesterol checks, and faecal occult blood tests and less patient worry, while effects on costs, disability, mortality, and intermediate markers stayed inconclusive. Employers sometimes demand pre-hire clearance; small low-quality evidence suggests fewer absences, yet groups such as ACOEM advise against useless tests like baseline low-back X-rays. Japan legally requires yearly checks for regular employees; U.S. and Japanese practice is common, mainland Europe and Southeast Asia more varied.
False positives rise when labs hunt disease in the well, feeding anxiety, wrong labels such as athletic heart mistaken for cardiomyopathy, and occasionally harm from follow-up. Fee-for-service incentives may keep annual rituals alive against guidelines favoring risk-tailored intervals. Patients who expect a hands-on exam may doubt plans and the relationship if none occurs—the exam as clinical ritual, not only data collection. History plus exam yields a differential diagnosis; tests or empiric therapy then confirm or redirect. Referenced as early as 1671 and pushed since the 1920s, the periodic exam thrived with insurance markets long before today's evidence standards.
Source: Physical examination
