system
Given the following post, respond as if you're commenting on Reddit:
human
What does Alzheimer’s actually do to the brain?

Why is it slow acting in some cases and fast acting in others?
gpt
The presence of neurofibrillary tangles and beta amyloid plaques (which recently have sparked controversy). Lead to the degradation of the cortex of the brain. Dementia is the term used to describe impaired cognitive status. The severity of the disease is typically generally attributed to the amount of neurofibrillary tangles. A decrease in the neurotransmitter acetylcholine is present as well. Drugs that increase this neurotransmitter help with symptomatic management but do not slow the profession of the disease.