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Study Questions the Value of Annual Physical Exams

By
WebMD Health News
Reviewed by Louise Chang, MD

Oct. 16, 2012 -- Regular physical exams are annual rituals for many Americans.

Now a new research review finds that these kinds of checkups don’t help people live longer, and they don’t cut the risk of dying of cancer or heart disease.

“We did not find any signs of benefit,” on death risk, says researcher Lasse T. Krogsboll, a PhD student at the Nordic Cochrane Center in Copenhagen, Denmark.

Despite the dim light the review casts on annual exams, researchers and independent experts say it’s not necessarily time to give up on regular physicals. For the study, researchers pooled data from 14 studies that included more than 180,000 people. All the studies randomly assigned people to one of two groups: The first group was asked to get regular checkups; the second group only saw a doctor as needed.

Tests done during the checkups varied from study to study, but most included measures of blood pressure, cholesterol, blood sugar, heart rhythms, vision, and hearing.

Studies included in the review followed people for as little as four years and as long as 22 years.

Benefits and Harms of Annual Physicals

When researchers compared the number of deaths between the group that got regular physical exams and the group that only saw a doctor as needed, there was essentially no difference.

On average, about 7% of people died in each group over the course of the studies. That was true even when researchers looked at deaths from cancer and cardiovascular disease, which are thought to benefit from early detection and treatment.

Perhaps unsurprisingly, people who saw a doctor on a regular basis were more likely to be diagnosed with conditions like high blood pressure and high cholesterol.

Some studies found they were more likely to be treated for those conditions, too. Out of four studies in the review that looked at drug use, two found that people who got regular physicals were more likely to be prescribed drugs to treat high blood pressure, for example.

There was a trend among studies for people who got regular physicals to feel healthier than people who did not, but researchers say that finding is unreliable. There were no apparent differences between groups on hospital admissions, worry, referrals to specialists, or disability.

“In the absence of documented health benefits, we would say there’s a risk of overdiagnosis from this,” Krogsboll says.

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