is fairly prevalent among older individuals. But the early- onset familial variety of the disease is known to occur before the age of 60. The early onset disease results from mutations in the genes that code for the proteins called ‘presenilins’. The late onset disease however results in the E4 variant of the apo E gene (which is also involved in heart diseases).
There is a decline in the cognitive function
in older individuals. And this is especially so in smokers and drinkers. The variants of the apoE gene is again believed to play a role.
The older a person, the greater is the chance of suffering a stroke
. A stroke can change the lives of the victim and also of those involved in patient care.