Everyone can add something they've read on the subject. Today I was watching Dr. Neil Barnard who was on Dr. Oz's program. He's an expert on the subject, talking about what we can do right now to prevent it....hopefully. One thing I didn't know was that doctors now think it's coming from an excess of copper, iron and zinc that accumulates in our brains messing up with the neural transmitters, etc. These minerals coming from copper piping, copper pots, aluminum cookware, iron cookware, and also foods that have an excess of these minerals AND excess minerals that are being added to supplements. He also talked about the foods we can eat and what to avoid. If you're interested in watching this you can look up Dr.Oz show and do a search for him. I'm also going to get his books and read up on this. Prevention is the key.