Secondhand Smoke Linked to Raised Diabetes Risk

SUNDAY, June 24 (HealthDay News) — Exposure to secondhand smoke
seems to be associated with an increased risk of obesity and type 2
diabetes in adults, according to a new study.

The findings are based on data from more than 6,300 adults who
participated in the U.S. National Health and Nutrition Examination Survey
from 2001 to 2006. The researchers found that, compared to nonsmokers,
those exposed to secondhand smoke had a higher rate of type 2 diabetes and
a higher body-mass index (BMI), a measurement that takes into account
height and weight.

In addition, compared to nonsmokers, people exposed to secondhand smoke
also had a higher measure of insulin resistance (which can lead to type 2
diabetes), higher levels of fasting blood sugar, and a higher hemoglobin
A1c reading (a measure of blood sugar control over the past three
months).

Diabetes rates were similar for people exposed to secondhand smoke and
smokers, and both groups had a higher hemoglobin A1c than nonsmokers.
However, people who were current smokers had a lower BMI than nonsmokers,
the findings showed.

The study was scheduled for presentation Sunday at the Endocrine
Society’s annual meeting in Houston. The data and conclusions of research
presented at medical meetings should be viewed as preliminary until
published in a peer-reviewed journal.

While the study uncovered an association between secondhand smoke
exposure and obesity and type 2 diabetes risk, it did not prove a
cause-and-effect relationship.

“The association between secondhand smoke and type 2 diabetes was not
due to obesity,” study co-author Dr. Theodore Friedman, chairman of the
department of internal medicine at Charles R. Drew University in Los
Angeles, said in an Endocrine Society news release.

“More studies are needed to show whether secondhand smoke is a cause of
diabetes,” Friedman added. In addition, “more effort needs to be made to
reduce exposure of individuals to secondhand smoke,” he concluded.

More information

The U.S. Centers for Disease Control and Prevention has more about secondhand smoke.

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