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Smoking Not Linked to Higher Dementia Risk

The present study stands in contrast to the previous research that found a correlation between smoking and dementia.


Updated:March 29, 2019, 8:26 PM IST

It is no secret that smoking increases the risk for cancer, heart disease, diabetes and even blindness. But puffing on a cigarette is not associated with a higher risk of dementia, says a new study.

The present study, published in the Journal of Alzheimer's Disease, stands in contrast to the previous research that found a correlation between smoking and dementia.

"The underlying data (in those studies) was solid, but the analysis didn't take into account the idea of competing risk of mortality, which we felt was an important factor to consider in this case since smoking is so strongly associated with earlier death," Erin Abner from University of Kentucky, who was among the the researchers, said.

For the study, the researchers included 531 initially cognitively-normal people.

They used a statistical method called competing for risk analysis to determine whether there was a connection between smoking and dementia.

The data demonstrated that smoking was associated with a risk of earlier death -- but not dementia.

"While our study results could influence smoking cessation policy and practice, we feel that the most important consequence of our work is to demonstrate how this method could change the way we approach dementia research and to advocate for its adoption in the appropriate areas of study," said Abner.

"To be clear, we are absolutely not promoting smoking in any way.

"We're saying that smoking doesn't appear to cause dementia in this population," Abner added.

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