Oats contain more soluble fibre than any other grain, resulting in slower digestion and an extended sensation of fullness. One of the soluble fibres in oats, beta-glucans, has proven to help lower cholesterol resulting in oat bran and products containing oat fibre being marketed as preventatives against heart disease. Oats are also a good source of iron, folate, magnesium and pantothenic acid (vitamin B5). Oats, after corn (maize), have the highest lipid (fat) content of any cereal. Oats also contain a very high quality protein, similar to that found in soy, which is considered by the World Health Organisation to be equal to meat, milk and egg protein.