In some cases there are easily treatable factors. For example the patient may have a vitamin deficiency. In this case they could feasibly halt their progression

In some cases there are easily treatable factors. For example the patient may have a vitamin deficiency. In this case they could feasibly halt their progression towards dementia by taking an inexpensive pill today. Human factors are always the most difficult in medicine. We expect old people to be slow, instead of seeing senility as a slow progression in the presence of modifiable risk factors.