A choline-rich diet is essential for brain health https://www.it-boltwise.de/cholinreiche-ernaehrung-ein-schluessel-zur-unterstuetzung-der-gehirngesundheit.html It's converted in the body to acetylcholine, a neurotransmitter crucial for signal transmission between nerve cells, and cognitive performance. A deficiency is associated with cognitive decline and Alzheimer's disease. Adults should consume at least 400 mg choline per day