1 Daily Soda May Boost Heart Disease
Researchers Point Finger at Diet, Regular Sodas; Industry Officials Disagree
WebMD News Archive
Study Details continued...
The questions about soda and other dietary habits were asked at three
different exam periods, from 1987 to 1991, 1991 to 1995, and 1995 to 1998. The
average age of those who answered questions about their soft drink intake and
other health habits was 53 during the three exam periods, Vasan says.
At the first exam period, those who drank one or more soft drinks daily had
a 48% increased prevalence of having metabolic syndrome compared with those who
drank less than one a day, the researchers found.
As the study progressed, drinking one or more sodas a day was linked with a
44% higher risk of participants developing metabolic syndrome, Vasan's team
found, compared with drinking less than a soda a day.
The researchers looked at soda consumption and the person's risk of
developing each of the five criteria of metabolic syndrome. "Other than
elevated blood pressure, the risk of developing the other four increased from
about 20% to 30% with one soda a day," Vasan tells WebMD. They also found a
trend toward an increased risk of developing high blood pressure with soda
consumption, but it wasn't enough to be considered significant.
Explaining the Soda-Heart Disease Link
The link between soda consumption and heart disease risk factors "might
be reflecting dietary behavior," Vasan says. "We know people who drink
sodas have a greater intake of calories."
Soda drinkers, he says, are more likely to have a less healthy lifestyle
pattern, such as eating fries, chips, and other high-fat foods. "They tend
to smoke more and exercise less," he says.
Even after adjusting for intake of fat, fiber consumption, total calories,
smoking, and physical activity, he says, there was still a link between soft
drink intake and metabolic risk factors.
"We cannot rule out the possibility that consumption of soda is a marker
of risk -- meaning it tracks with behavior that promotes the risk of metabolic
syndrome -- rather than a true risk factor," Vasan says.
Other possible explanations: Drinking more sweet beverages could condition
you to have a greater preference for eating more sweets, Vasan says, which
could increase your weight and your waist size. Or if you drink a large
soft drink with a meal, you may be hungrier and eat more at the next meal.