Preventive health screenings revealed that 41% of middle-aged adults had at least one previously undiagnosed suspected condition, with elevated LDL cholesterol and hypertension being the most frequent findings, suggesting such screenings offer significant value for targeted risk groups in midlife.
41% of middle-aged adults undergoing preventive health examinations had at least one newly identified suspected diagnosis.
Elevated LDL cholesterol was the most frequent newly identified suspected diagnosis, found in 28% of participants.
Hypertension was the second most frequent newly identified suspected diagnosis, found in 9% of participants.
Male sex was associated with significantly higher odds of having any suspected diagnosis and specifically of having hypertension.
BMI was positively associated with hypertension and showed a weak positive association with elevated cholesterol.
Having had a recent blood test was associated with lower odds of having any newly suspected findings.
A family history of dyslipidemia was associated with higher odds of having elevated cholesterol identified.
No consistent associations were observed between lifestyle factors and the suspected diagnoses identified.
The study used a cross-sectional design with standardized preventive clinical examinations including self-reported histories and objective laboratory tests.
This research suggests that routine preventive health check-ups for middle-aged adults can uncover a surprisingly large number of health conditions that people don't know they have. In a study of over 1,000 adults between the ages of 45 and 59, more than 4 in 10 participants were found to have at least one previously unidentified health concern — most commonly high LDL ('bad') cholesterol (found in 28% of participants) and high blood pressure (found in 9%). These conditions had not been previously documented in their medical records, meaning they were going untreated. The research also identified certain groups more likely to have undetected conditions. Men were more than twice as likely as women to have undiagnosed high blood pressure, and people with higher BMI also faced elevated risk. Notably, people who had received a blood test recently were less likely to have newly detected conditions, suggesting that those with less frequent contact with the healthcare system are particularly at risk of missing diagnoses. Family history of cholesterol problems was also linked to a higher chance of having elevated cholesterol detected. This research suggests that targeted preventive screenings — especially for middle-aged adults who do not regularly see a doctor — could play an important role in catching conditions like high blood pressure and high cholesterol before they lead to serious health events such as heart attacks or strokes. The authors note that further research is needed to understand whether these screenings lead to better long-term health outcomes and whether they are cost-effective on a larger scale.
Kalski L, Hafermann L, Pulst Caliman T, Greiß F, Karathanos A, Pächter C, et al.. (2026). Detection of previously undiagnosed conditions in midlife preventive health examinations.. Scientific reports. https://doi.org/10.1038/s41598-026-53658-2