For example, a study commissioned by Kellogg's and published in the journal Appetite (2001, 37:249-250) reports that wholemeal cereals, if regularly consumed, have a positive effect on a person's mood. Professor Andrew Smith, Cardiff University, Wales, U.K., notes that a group that consumed 40g of high-fiber cereal each day showed fewer cognitive difficulties, lower depression scores, and a 10% reduction in fatigue as compared to a group that ate a “normal” breakfast.
Although several studies, (including one with ispaghula husk fiber published in the October 14, 2000 issue of The Lancet) made waves when they appeared to negate some of fibers health benefits, researchers generally agree the evidence is overwhelming that it is important to eat fiber-containing fruits, vegetables, and whole grains. All this has not been lost on marketers.