Well, it seems logical that not eating lots of AGE-rich cooked-foods for long periods would give the body time to get rid of the accumulated toxins.
The catch with caloric restriction is that people and animals who practice it over long periods tend to feel things such as diminished sexual function, general tiredness, muscle-weakness etc, so that the benefits tend to be outweighed by the consequences. The best approach is Intermittent Fasting which some studies seem to indicate gives most or all of the benefits of caloric resriction without the disadvantages.