Can medicines treat Alzheimer's disease?

I believe that Alzheimer's disease can't be treated by medicines alone.

Alzheimer's is a disease that screws up the wiring of the mind in the following way:

- Nerve cells die
- Transfer of Signals between Nerve cells get impacted severely

Medicines can provide the chemicals that can clear the plaques and other obstructions impeding signal transfer.

However, the main issue is to restore the complex connections between the Neurons. These connections are something that an individual learns over time through the feedback from his daily experiences.

I believe these connections are broken due to two main causes:

1. Bio-chemical weakening of the brain (either due to lifestyle or aging)
2. Loss of active interest in life (which weakens these connections)

A medicine can address the first, but not the second. The second can only be addressed by understanding why the person has lost interest in life, and then considering what can be done to fix it.