- Lung cancer
- Heart disease
- Alzheimer's disease.
The study findings are similar to previous studies that show smoking is linked with alzheimers and dementia. Now the conundrum is determining the why smoking affects brain function. However, experts do believe that smoking causes "inflammation and oxidative stress — cell damage from toxic free radicals in the body — conditions that are associated with the onset of Alzheimer's," according to study researcher and scientist Rachel Whitmer.
The study also determined that those who smoked less than half a pack a day did not have an increased risk for developing alzheimers or dementia than those who never smoked.
Other studies were done in the past that showed that the more cigarettes a person smokes the greater the risk of developing mental deterioration, although this current study was the most thorough and most conclusive.