Is Choline Truly Essential?
Known at one time as vitamin B4, before being stripped of its essential status, choline is a molecule required by every cell, being especially important for mitochondrial energy production, fetal neurological development, and healthy liver function. It also plays an underappreciated role in the methylation cycle, which bears upon everything from gene expression to cardiovascular health. So it seems inexplicable that such an important molecule could lose its vitamin status.