Choline deficiency may increase the risk of Alzheimer's disease by promoting the formation of amyloid-beta and tau.
“Choline is an essential nutrient that supports the production of acetylcholine, a neurotransmitter involved in neurogenesis, synapse formation, learning, and memory. It is produced in the liver and is also found in foods such as eggs, meat, fish, beans, and nuts and as a dietary supplement.”