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monosaccharides such as glucose and fructose are found in fruits and honey.sucrose or table sugar (produced from sugar cane or sugar beets)is the most commonly consumed disaccharide.maltose is a component of sprouting grains,malted cereals and syrups.Lactose is the sugar in milk.amylose is the dominant starch in wheat and rice.amylopectin is found in corn,potatoes.

resistant starches are starches which are poorly digested in the human gastrointestinal tract,either because the starch is in granular from and therefore resistant to digestive enzymes,or in the from of retrograded amylose,which may from after cooling starch that has been gelatinized by moist heating.up to7-10% of starch from wheat,oats and potatoes and 20% frombaked beans can pass through to the colon.resistant there by the micro flora and converted into short-chain fatty acids,a process which alsoyields small amounts of methane gas and hydrogen.

conversion of carbohydrate into fat allows animals to build up fat reserves even when their feed contains very little fat.it has therefore long been believed that excess carbohydrate can readily be converted into stored body fat.however, it is now well established that in man, fat synthesis is essntially negligible under conditions of unrestricted access to food. on another front , it has been shown recently that hyperactivity in children is not associated with sugar on the beneficial effect of consuming more complex carbohydrates which have a relatively low glycemic index (they cause a less abrupt increase in blood glucose levels after meals) instead of the more rapidly imprortant for individuals affected by insulin-dependent, as well non-insulin dependent,diabectes and because complex carbohydrates tend to exert favorable at risk for cardiovascular disease. in addition there is continuing research into the role of non-starch polysaccharides in the prevention of colonic cancer.