Taking antibiotics might increase the risk of developing
type 2 diabetes, new research suggests. Danish
researchers found that people with type 2 diabetes
tended to take more antibiotics in the years leading up
to their diagnosis than Danes without the condition.
"Patients with type 2 diabetes are overexposed to
antibiotics compared with matched control persons
without diabetes," study researcher said. "The
overexposure is seen after, as well as 15 years, before
the diagnosis of type 2 diabetes," he added. Although
the researchers uncovered an association between
antibiotic use and type 2 diabetes, it's important to
note they did not establish a direct cause-and-effect
relationship. For the study, the scientists tallied
antibiotic prescriptions filled by more than 170,000
Danes with type 2 diabetes and about 1.3 million other
adults between 1995 and 2012. The men and women were
identified using records from national health
registries. Individuals diagnosed with type 2 diabetes
filled an average of 0.8 antibiotic prescriptions
annually, compared to 0.5 a year among those who didn't
develop diabetes. The more prescriptions, the more
likely those people were to have type 2 diabetes, the
researchers found. Those who took an antibiotic,
regardless of the type, were 50 percent more likely to
get a diabetes diagnosis if they had filled five or more
prescriptions compared to those who filled none or one,
he said. Narrow-spectrum antibiotics such as penicillin
V conferred a slightly higher risk than broad-spectrum
antibiotics. What drives the higher risk for diabetes
isn't clear, researcher said. It's possible that the
condition develops over time, increasing the risk of
infection -- and need for antibiotics -- before an
actual diabetes diagnosis, he said. Or, perhaps repeated
infections somehow increase diabetes risk, or exposure
to antibiotics boosts the odds. Research in animals has
found that antibiotics may change the gut bacteria and
affect sugar and fat metabolism, he added. "Also, it has
been suggested that certain gut bacteria may contribute
to the impaired ability to metabolize sugar seen in
people with diabetes," he said. |