"Caloric restriction" refers to reducing the amount of calories you consume. This means eating less food or consuming lower calorie meals to control or reduce your overall calorie intake. Full definition
This prompted keen scientific interest on the effects of caloric restriction on lifespan. (fitbodyhq.com)
A systematic review of dietary protein during caloric restriction in resistance trained lean athletes: a case for higher intakes. (completehumanperformance.com)
Still, the effects of caloric restriction on primates have been debated. (sciencedaily.com)