Alzheimer's disease is a progressive, degenerative neurological disorder that affects the brain's ability to think, remember, and function. It is the most common form of dementia, accounting for up to 80 percent of all cases.
The exact cause of Alzheimer's is unknown, but scientists believe that several factors may contribute to its development. Genetics is believed to play a role, as the disease tends to run in families. Studies have also shown that lifestyle choices such as smoking, lack of physical exercise, and poor diet can increase the risk of developing the condition.
Age is also a contributing factor. The disease is most commonly seen in people over the age of 65, and the risk increases with age. A history of head injuries can also increase the risk, as can certain medical conditions such as diabetes, high blood pressure, and cardiovascular disease.
There is also increasing evidence that environmental factors may play a role in the development of Alzheimer's. Exposure to certain chemicals and pollutants has been linked to an increased risk of the disease, as has a lack of mental stimulation.
Finally, certain underlying medical conditions such as high cholesterol, depression, and sleep apnea can increase the risk of developing Alzheimer's. It is also believed that inflammation and oxidative stress can be contributing factors.
