-- Robert Preidt
FRIDAY, Nov. 22, 2013 (HealthDay News) -- Obese or overweight
people who lower their blood pressure, cholesterol and blood sugar
levels could cut their risk of heart disease and stroke by more
than half, a new study indicates.
Researchers analyzed 97 studies that included a total of more
than 1.8 million people worldwide. They found that high blood
pressure, cholesterol and blood sugar levels explain up to half of
overweight and obese people's increased risk of heart disease. And
those same factors account for three-quarters of their increased
risk of stroke.
High blood pressure posed the greatest threat, accounting for 31
percent of the increased risk of heart disease and 65 percent of
the increased risk of stroke, according to the study, published
online Nov. 22 in
"Our results show that the harmful effects of overweight and obesity on heart disease and stroke partly occur by increasing blood pressure, serum cholesterol and blood [sugar]," senior study author Goodarz Danaei, an assistant professor of global health at Harvard School of Public Health in Boston, said in a school news release. Therefore, controlling these risk factors -- for example, through better diagnosis and treatment of high blood pressure -- can prevent some of the harmful effects of overweight and obesity, he added.
Obesity has nearly doubled worldwide since 1980. More than 1.4
billion adults aged 20 and older are overweight or obese. Health
problems associated with overweight and obesity include heart
disease and stroke -- the leading causes of death worldwide --
diabetes, and several types of cancer.
Moreover, about 3.4 million people worldwide die each year
because of overweight and obesity, according to the
Study co-author Majid Ezzati, a professor of global
environmental health at Imperial College London, said controlling
blood pressure, cholesterol and diabetes will be "an essential but
partial and temporary response" to the obesity epidemic.
"As we use these effective tools, we need to find creative approaches that can curb and reverse the global obesity epidemic," Ezzati said in the news release.
The U.S. National Heart, Lung, and Blood Institute has more
overweight and obesity.
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