Within a healthy human brain, you’ll be able to find billions of neurons – cells that transmit information to each other through electrical and chemical reactions called synapses. These networks of neurons and synapses constitute our thoughts, behaviors, feelings and memories, everything that makes you, you.
Alzheimer’s disease causes widespread and catastrophic neuron damage, causing neurons to stop functioning, lose their connections with other neurons and die. Alzheimers typically affects neurons in the brain responsible for memory, followed by neurons responsible for reasoning, language, and social behavior before moving onto other parts of the brain. Over time, an afflicted person gradually loses their ability to live independently and function normally, eventually resulting in death.