Not necessarily. Though Alzheimer's is an age related disease, and each 5 years increases the likelihood of developing Alzheimer's [1]. The older you get, the

Not necessarily. Though Alzheimer's is an age related disease, and each 5 years increases the likelihood of developing Alzheimer's [1]. The older you get, the more likely you are to get Alzheimer's. Young people don't get Alzheimer's (with the exception of early onset, which is still in an older population). So if we extend life long enough, will everyone get it? Unlikely. Just like not everyone with high cholesterol develop heart disease. However the older we get, the worse sleep gets, the more build up of amyloids, the more likely a person is to develop Alzheimer's. Part of the reason the amyloid theory is in question is because there are people with significant build up of amyloid who do not develop Alzheimer's and there are people with little amyloid build up who do generate Alzheimer's. [1] https://www.nia.nih.gov/health/what-causes-alzheimers-disease#:~:text=Older%20age%20does%20not%20cause,older%20may%20have%20Alzheimer's%20disease https://www.nia.nih.gov/health/what-causes-alzheimers-diseas....