Which of the following factors is NOT linked to the etiology of Alzheimer's Disease?

In the context of Alzheimer's disease, heredity, low levels of acetylcholine (ACh), and neuritic plaques in the brain are all factors that have been extensively studied and are linked to the disorder's etiology. Genetic predisposition plays a significant role, particularly with the presence of genes such as APOE ε4, which has been associated with an increased risk of developing Alzheimer's.

Low levels of acetylcholine are also well-documented in Alzheimer’s patients. ACh is a neurotransmitter that is crucial for memory and learning, and deficits in ACh are believed to contribute to cognitive decline in individuals with the disease.

Neuritic plaques, which consist of beta-amyloid peptides, are another hallmark of Alzheimer's pathology and are associated with the neurodegenerative processes involved in the disease. The accumulation of these plaques disrupts cellular function and is a key focus in understanding the progression of Alzheimer's.

In contrast, high levels of serotonin are not typically linked to the etiology of Alzheimer's disease. While serotonin does play a role in mood regulation and has some association with cognitive functions, elevated levels are not recognized as a contributing factor to the development of Alzheimer's. This distinction makes the factor of high levels of serotonin the correct answer to the question about which