General health checks do not reduce mortality. What changes outcomes is who examines you.
The 2019 Cochrane review, 11 randomised trials and 233,298 participants, finds a relative risk of 1.00 on all-cause mortality. The Danish DANCAVAS trial of 2022, 46,611 men aged 65 to 74 with full imaging, does no better. Yet the COLO-DETECT trial of 2024, 12 UK hospitals and 2,032 patients, raises detection from 48.4% to 56.6% by changing the conditions of the examination. Being examined is not enough.
The questions people ask us
- Is a full check-up actually worth anything?
- Why does the doctor performing the examination change the result?
- How do you avoid unnecessary and irradiating tests?
- Do four weeks of waiting actually change anything?
What the figures say
| What is measured | The result | Source and year |
|---|---|---|
| Effect of general health checks on all-cause mortality | Relative risk 1.00, no effect | Cochrane review, 2019, 11 trials, 233,298 participants |
| Comprehensive cardiovascular screening with imaging, mortality at 5.6 years | No significant benefit | DANCAVAS, 2022, 46,611 men |
| The same screening in younger men | Hazard ratio 0.94, not significant, and more major bleeding | DANCAVAS II, 2025, 31,268 men |
| Lesion detection at colonoscopy according to examination conditions | From 48.4% to 56.6% | COLO-DETECT, Lancet Gastroenterology and Hepatology, 2024 |
| Missed lesions, tandem trial | 15.5% against 32.4%, twice as few | Gastroenterology, 2022, 8 centres |
| Net one-year survival by route to cancer diagnosis | 94% via screening, 85% after urgent referral, 82% via the family doctor | UK national data |
This table is uncomfortable, which is exactly why it deserves to be read in full. The first three lines say that having a general check-up does not make you live longer. The next three say that the quality of a targeted examination, and when it is done, change outcomes by a factor of two. The conclusion is not “do nothing”, it is “a work-up is worth what it looks for and who performs it, not how many tests it stacks up”.
What Noria Health does on health assessment, and what it does not
Noria Health arranges a health assessment near Brussels within 24 to 48 hours, built the opposite way round from habit: the list of tests follows from the risk profile, not from a package. Every irradiating test carries an individual justification signed by the practitioner. The report is issued within 24 hours, follow-up is structured at D14, D30 and D90.
What Noria Health does not do: sell an assessment by the number of tests. The trials above show that stacking tests does not improve mortality and does increase false positives, and therefore the unnecessary procedures that follow them. An assessment that removes tests is often a better assessment, and it is harder to sell than a catalogue.
Who reviewed this page
Noria Health editorial team. This page has not yet been reviewed by a practitioner in the specialty. It will be before any commercial promotion.
The health assessment articles
- Check-up: what a useful assessment should really look for
- Colonoscopy: up to 7 times more lesions found, depending on the doctor
- Check-up: how to avoid unnecessary tests
- Diagnosis, when 4 weeks of delay can matter
Have your case reviewed. Noria Health arranges a specialist consultation near Brussels and confirms feasibility within 24 to 48 hours. Open a case.