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
people who know N5 contains zero calories tend to eat more foods prepared with N5 than do people who are unaware that N5 is calorie-free