Memory problems in Alzheimer's occur due to gradual damage to brain cells, especially in areas that control learning and recall. You can support your memory by following routines, using reminders, staying mentally active, exercising regularly, and taking prescribed medicines like donepezil as advised by your doctor.

Parkinson's plus disorders cause faster decline than regular Parkinson's, leading to worsening balance, stiffness, and movement problems. They can also affect thinking and memory early, causing slowed processing and difficulty with planning or attention.

There's no single test that can identify every medicine he may have taken. However, a doctor can order basic blood and urine tests to check for common drug levels and assess for any harmful effects. Keeping medicines locked and supervised is the safest approach.

Alzheimer's therapy often fails because the disease starts years before symptoms appear, and treatments usually begin too late. The brain changes are complex, like amyloid, tau, inflammation, and cell loss. So targeting just one pathway isn't enough. Research is ongoing to develop earlier and more effective multi-target treatments.