Sugar is not only 'sugar'. Salt is not only 'salt'. And fat is not only 'fat'.
Sounds weird?
One of the tricks that are used by Food Industry companies is the usage of sugar, salt and fat substitutes. 
Replacements are used to achieve the ideal taste and, of course, to decrease production expenses. 
Here we provide the lists of the natural and artificial replacements which you can see in the food products' ingredients.