Methionine, an essential amino acid, is the major lipotropic compound in humans. When oestrogen levels are high, the body requires more methionine. Oestrogens reduce toxins' flow through the liver and increase cholesterol levels. Methionine helps deactivate the negative effect of oestrogens by correcting the balance. Methionine levels also affect the amount of sulphur-containing compounds, such as glutathione, in the liver.
Choline assists detoxification reactions in the liver.
Although choline can be synthesised by the body from methionine, recent evidence indicates that choline is an essential nutrient. Lecithin and Choline Many of choline's effects have a lot more to do with digestion than with brain function. Yet there are components of lecithin that seem to play a critical role in nerve function - and our brains, of course, are nothing more or less than elaborate, busy nerves making interesting connections. Lecithin forms naturally in all living cells of the body, and acts as an emulsifier. It helps keep fatty substances in bile, which is essentially a kind of juice produced by your liver.