Infertility

Infertility was the inability for a lifeform to produce offspring.

Peri Brown was left infertile after contracting Spectrox toxaemia. (TV: The Caves of Androzani, AUDIO: The Widow's Assassin)

Lord Haldoran attempted multiple times to impregnate his wife Donna before discovering that she was infertile, leading to their divorce. (PROSE: Legacy of the Daleks)

Claire was infertile by the time of 24 December, 2002, even after trying for IVF, but two weeks later on 11 January, 2003, a Tenza named George masqueraded as her and her husband Alex's child using a psychic field and a perception filter which held as the reason why Alex cannot remember his birth. (TV: Night Terrors)

Amy Pond was rendered infertile after her ordeal at Demons Run, after the birth of her first child, River Song. (TV: A Good Man Goes to War) This put great strain on her marriage to Rory Williams for a short time, nearly culminating in their divorce, before they reconsiled while on a trip to the Dalek Asylum with the Eleventh Doctor. (TV: Asylum of the Daleks) The couple later adopted a son, Anthony Williams. (PROSE: Summer Falls: Introduction, WC: Rory's Story)