The annual physical — that ritualistic 15-minute visit to your primary care physician once a year — is one of the most persistent traditions in American medicine. It's also, according to the best available evidence, one of the least effective.
This doesn't mean preventive medicine is useless. It means the format is wrong.
What the evidence says about annual physicals
The Cochrane Collaboration's systematic review (Krogsbøll 2019) analyzed 17 randomized trials, 15 of which reported outcome data on 251,891 adults. The conclusion: general health checks did not reduce all-cause mortality, cardiovascular mortality, or cancer mortality. They may increase the number of new diagnoses (low-certainty evidence) — and more diagnoses without better outcomes is a hallmark of overdiagnosis.
The Society of General Internal Medicine recommends, as part of the "Choosing Wisely" campaign against low-value care, not to perform routine general health checks for asymptomatic adults. In Canada, the national task force on the periodic health examination concluded as early as 1979 that the routine annual check-up should be abandoned in favour of age-specific preventive measures.
The annual physical persists not because of evidence, but because of tradition, patient expectation, insurance incentives, and the comforting ritual of "getting checked."
Why the format is the problem
The annual physical fails not because prevention is wrong, but because the format makes good prevention impossible:
- Too short: 15 minutes is not enough time to take a proper history, review prior results, discuss risk factors, perform a meaningful exam, and have a genuine conversation about findings.
- Too frequent for some things, not frequent enough for others: An annual lipid panel is unnecessary if last year's was normal. A colonoscopy every 10 years is sufficient if no polyps are found. Blood pressure, by contrast, should be checked regularly — while some of the most informative measurements, such as cardiorespiratory fitness (VO₂max), are almost never made at all.
- Too standardized: Every patient gets the same panel regardless of risk profile. A 45-year-old woman with BRCA family history and a 45-year-old man with no risk factors get the same CBC and metabolic panel.
- No integration: Even when the annual physical detects something, the follow-up is fragmented. The primary care physician refers to a specialist. The specialist runs more tests. Nobody integrates the full picture.
What should replace it
The evidence supports a different model: risk-stratified assessments at appropriate intervals, conducted with enough time to be thorough, using tests matched to the individual's risk profile.
For a healthy 40-year-old with no family history and normal prior results, a comprehensive assessment every 3–5 years may be more valuable than 5 superficial annual visits. For a 55-year-old with family history of early cardiovascular disease and metabolic syndrome, an intensive assessment now — with targeted follow-up at 6 weeks and 12 months — is far more effective than another 15-minute check-up.
The question isn't "should I see a doctor every year?" It's "what should actually happen when I do?" The annual physical answers the first question and ignores the second.
What a better check-up should include
A sensible assessment starts with a detailed history, including family history, and a review of prior results so that trends become visible. Tests should be chosen according to individual risk rather than ordered as a fixed panel, and every finding should be explained together with what follows from it. The visit should end with a clear follow-up interval — weeks for a specific finding, a few years for most healthy adults. Useful questions to bring to your own doctor: Which tests make sense for my risk profile, and which don't? How do my results compare with previous ones? When should we look again, and why? Quality over frequency.
References
- Krogsbøll LT, Jørgensen KJ, Gøtzsche PC. General health checks in adults for reducing morbidity and mortality from disease. Cochrane Database Syst Rev. 2019;1:CD009009. PMID: 30699470.
- Mehrotra A, Prochazka A. Improving value in health care — against the annual physical. N Engl J Med. 2015;373(16):1485-1487.
- Choosing Wisely. Society of General Internal Medicine recommendations. 2013.
- Canadian Task Force on the Periodic Health Examination. The periodic health examination. Can Med Assoc J. 1979;121(9):1193-1254.
This article is general information and not individual medical advice. Decisions about tests and treatment belong in a conversation with your own physician.