Is there a connection between Alzheimer's disease and smoking?

Several main studies have shown correlation between smoking and developing Alzheimer's disease, but none of them is sufficiently widespread or detailed to fully understand the connection. Some early studies were retrospective, which means that they were investigating smoking habits of those who have already developed Alzheimer's disease. Prospective studies were followed by smokers and non -smokers, testing and measuring mental sharpness. At present, smokers are worse for smokers. However, in people who have a gene that is susceptible to the development of Alzheimer's disease, smoking seems to prevent or accelerate the onset of the disease. All participants began without symptoms of dementia and were tested two years later to determine their mental sharpness. This study considered the factors of the "gene environment". It looked independently on people who carried the gene of Apolipoprotein E-4, suggesting that it is more likely that Alzheimer's will develop in their lives. Surprisingly, these carriers who smoked were notIf they are more likely than non-doctors to get dementia.

In 2004, the same medical center published another study that shows that among those who smoked, the level of mental decline was significantly worse. In fact, they could even measure the difference between the individuals who have smoked in the past, but since they ended up and those who have not smoked their entire adult life. The study was much larger than the previous study, which included nearly 10,000 people over 65 years of age. There is also increasing evidence that Alzheimer's disease, as a neurological disorder, can also be considered a vascular disease. There are many, indisputable studies that prove tuxedo is harmful to vascular health.

One complication in these studies is the tendency of smokers to die earlier than non -smokers from stroke, cancer or heart disease. Studies are therefore distorted to those relatively healthy smokerthose who did not suffer serious health problems. These studies also rely on people's own reports about their smoking, rather than collecting independent verification. In the end, nicotine turned out to be injected and not inhaled, can improve the Faculty of Mental, such as memory of memory, in Alzheimer's patients. Surely other studies to fully understand the causal relationship between Alzheimer's disease and smoking are required.