how do we get dementia?!
"a serious mental disorder caused by brain disease or injury, that affects the ability to think, remember and behave normally" i found this answer in oxford dictionary
in my opinion sleeping in the right time ,exercising,hiking
, and other group sports may help u.
Dementia isn't so much a disease as it is a symptom of metal degenerative conditions like Alztheimers.
There is some interesting information on this site http://www.dementia.com/home.jhtml?_requestid=2423058
Dementia's most common form is alzeheimers disease, which is common the older you get, it can be cause by many things like a stroke earlier in life. etc..
when I remember.i will let you know