People who need to reduce their intake of fat and to consume fewer calories often turn to fat substitutes, especially those with zero calories such as N5  But studies indicate that N5 is of no use to such people
Subjects who ate foods prepared with N5 almost invariably reported feeling hungrier afterwards than after eating foods prepared with real fat and consequently they ate more, quickly making up for the calories initially saved by using N5
the total fat intake of people who eat foods prepared with N5 tends to decrease even if their caloric intake does not