| | Conditions & Treatments | Dementia How many Australians does dementia affect? In Australia, dementia affects more than 459,000 people. This number is expected to increase to over 1 million people by 2056. Dementia - Related Articles Signs & Symptoms of Mild Alzheimer's Stress & Alzheimer's Disease Dementia After Anesthesia Coffee & Alzheimer's Disease Alzheimer Remedies What Are the Concerns When Taking Care of a Dementia Patient? How does dementia disrupts homeostasis?