There are thoughts that go either way, but according to the Alzheimer's Association, Alzheimer's cannot be cured, prevented, or even slowed. This is scary to think about, since a lot people are unsure about what Alzheimer's even is. Alzheimer's, also known as AD, is a disease that effects brain function. It is a form of dementia that gradually gets worse over time. It effects a person's ability to think, their memory, as well as their behavior. Some research says that your odds to contract AD are heightened if you are female, if you have high blood pressure, or if you have suffered sever head trauma. Some researchers also believe that certain herbs and dosages of Vitamin D can prevent Alzheimer's, though none of that is heavily proven. To get the raw data, I think this short video is a good source. It's interesting (and scary) to see how much AD really affects the lives of those around us.