Study shows cigarette smoking a risk for Alzheimer’s disease
When all studies were considered together, the risk factor for developing AD from smoking was essentially neutral at a statistically insignificant 1.05.
So where did the dramatic headline come from? Step forward Dr. Stanton A. Glantz (for it is he), who has found an association after "controlling for study design, quality of the journals, time of publication, and tobacco industry affiliation of the authors."
Blimey, that's a lot of controlling and sounds very subjective. Is the self-styled "anti-smoking lunatic" Glantz really the best man to be judging bias? When it comes to identifying 'tobacco industry affiliation' he generally seems to use the six degrees of separation theory.
If anyone has the study, I'd love to see it. Please e-mail me: email@example.com.