Kaiser Permanente followed 21,000 people for more than 20 years and found that people in their 50s and 60s who smoked more than two packs of cigarettes a day had a 157 percent greater risk of suffering the Alzheimer s "compared to non-smokers. smokers also have a risk 172 percent higher vascular dementia, which is linked to stroke and various medical conditions affecting the blood supply to a person "of the brain.
The risk of dementia was reduced to less frequent smokers and those who smoked one to two packs a day had a risk 44 percent higher, and smokers who have gone through half a pack to a pack a day were at risk 37 percent higher.
The Wall Street Journal reported that previous studies in the 190s suggested that smoking reduces the risk of dementia and it was believed that also could help prevent Parkinson "s disease due to the affect of nicotine brain chemicals. However, researchers believe that earlier studies were flawed because many heavy smokers dead before they developed Alzheimer ' Alzheimer "s.
This should give definitely give those thinking about quitting more incentive to do so.
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