Team McCallum

R&D for Lifetime of Life

Smoking v dementia.

A large study of middle-aged people in the US has found that anything over moderate smoking leads to an increased risk of dementia and Alzheimer’s later in life.

The researchers from the US and Finland looked at the records of health care company Kaiser Permanente, which gave them accurate information on how much the 21,000 people smoked at around age 50 to 60. These individuals were then followed up for an average of 23 years to determine their risk of dementia, vascular dementia and Alzheimer’s.

Former smokers who had ceased at the first check had the same risk of these diseases as non-smokers. The same was true for light smokers (less than half a pack a day).

Those smoking half to one pack per day had a 37% increased risk of dementia, while at one to two packs per day the increased risk was 44%.

Beyond this the risk jumped considerably. On more than 2 packs per day, the risk of dementia increased by 114% so it was more than double that of a non-smoker.

Risks for Alzheimer’s and vascular dementia were similar but higher. On more than 2 packs per day, for Alzheimer’s it was 157% up, and for vascular dementia it was 172% higher.

The study did not cover the risks for those smokers who gave up after the first checkpoint, so it is not clear whether this cuts the risk or not.

The study by Dr M Rusanen and others appears in the Archives of Internal Medicine.


October 26, 2010 - Posted by | Alzheimer's, Brain, Dementia, Health, Smoking, Success


  1. Smoking v dementia. « Team McCallum…

    Here at World Spinner we are debating the same thing……

    Trackback by World Spinner | October 26, 2010 | Reply

  2. Smoking v dementia. « Team McCallum…

    I found your entry interesting do I’ve added a Trackback to it on my weblog :)…

    Trackback by World Wide News Flash | October 26, 2010 | Reply

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