RoseTracker| The negative health linkage between smoking and cancer or heart disease is well established. If you choose to smoke, you are at higher risk for both diseases, as well as death. The linkage between smoking and Parkinson’s disease, dementia and other neurodegenerative health problems has not been as clear, with some studies suggesting that smoking reduces the risk of cognitive impairment.
Researchers in Finland tracked over 21,000 subjects who were surveyed from 1978-1985, when they were 50-60 years old. Diagnoses of dementia, Alzheimer’s disease and vascular dementia were tracked from Jan. 1, 1994 (when participants were an average of 71.6 years old), through July 31, 2008.
A total of 5,367 participants (25.4 percent) were diagnosed with dementia during an average of 23 years of follow-up, including 1,136 with Alzheimer’s disease and 416 with vascular dementia. Those who smoked more than two packs of cigarettes a day were at elevated risk for all forms of brain degeneration disease. via Science Daily