A new study claims that general health checks do not reduce the number
of deaths from cardiovascular disease or cancer.
They do, however, increase the
number of new diagnoses, the researchers said.
Health checks were defined as
screening for more than one disease or risk factor in more than one organ
system offered to a general population unselected for disease or risk factors.
Authors from the Nordic Cochrane
Centre in Denmark carried out a review of a total of 14 trials that looked at
systematic health checks. The studies had between 1 and 22 years of follow-up.
Nine of the 14 trials had data on
mortality and included 182,880 participants, 11,940 of whom died during the
study period. 76,403 were invited to health checks and the remainder were not.
All participants were over 18
years old and the study excluded trials specifically targeting older people or
trials that only enrolled people aged 65 or over.
Despite some variation regarding
the risk of death from cardiovascular disease and cancer, no evidence was found
for a reduction of either total mortality, cardiovascular mortality, or cancer
mortality.
Unsurprisingly, the researchers
found that health checks did more harm than good as it led to more diagnoses
and more medical treatment for hypertension.
The lack of beneficial effects
suggests over-diagnosis and overtreatment, the researchers said.
In conclusion, the results do not
support the use of general health checks aimed at the general population.
The researchers say that further
research should “be directed at the individual components of health checks e.g.
screening for cardiovascular risk factors, chronic obstructive pulmonary
disease, diabetes, or kidney disease”.
Source: ANI
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