G. Ballard's 1961 story "Mr F. is Mr F." features a man who regresses from adulthood to infancy when his wife becomes pregnant.Manuel de Pedrolo's 1975 "" ("Final journey") collection of short stories contains a story ("El regressiu" - "The regressive") set in a dystopian future with strict birth control in which a man starts regressing in age when he hits 78 and dies as an infant.