- "It's terrifying, the thought of slowly losing yourself. Not just the memories, but all of it."
- — President James Heller, "Day 9: 11:00am-12:00pm"
Alzheimer's disease was a neurological disease, and a type of dementia.
Jamey Farrell's father began showing symptoms of Alzheimer's shortly before Day 1. Her mother Erica Vasquez suggested to Tony Almeida that Jamey had partly been motivated to work for Ira Gaines in order to help pay for his treatment. (Findings at CTU)
During his first term as President, James Heller began displaying symptoms of Alzheimer's. At the time of Day 9, he was expected to retain his faculties for at least another year, but in private his doctors had told him it was advancing much more quickly than expected. Heller resolved to conclude a critical drone base treaty with the British before deciding how and when to step down. ("Day 9: 11:00am-12:00pm")