Biological mechanism for dementia

[sena2gurl]

Basically, a biological mechanism is a system by which a living organism modifies, changes, etc. itself and its environment. I think it's easier to grasp the concept by example. There are "mechanisms" other than biological. An abiotic system is free of biological organisms and abiotic transformations are accomplished, naturally, through non-biologic mechanisms.

[zinta]

i think every humna beibg feels this type of bilogical change....so we cann't say that every person has dementia...as its a disease you feel because of less self confidence and self believe...you cann't say that the whole system is responsible for this....