Choline is a lesser-known nutrient that is often grouped with the B-complex vitamins.

Choline is an essential nutrient for human health and is needed for various processes in the body.

It is required to synthesize the neurotransmitter acetylcholine and is also a component of cell membranes.

A low choline intake has been implicated in liver diseases, heart disease and neurological disorders.

This nutrient may be especially important for pregnant women. Studies show that a low choline intake can raise the risk of neural tube defects and lead to decreased cognitive function in the baby.

Many people do not get enough choline. As an example, one study in pregnant, Canadian women found that only 23% reached the adequate intake of choline.

The best sources of choline in the diet are egg yolks and beef liver. One large egg contains 113 mg of choline.

Choline is an essential nutrient that few people get enough of. Egg yolks are an excellent source of choline.