Age

Age was the length of time that a person has lived or a thing has existed. Different species could live to a maximum of many different ages.

Rose Tyler was said to be have been 19 on a poster when she left Earth with the Ninth Doctor and didn't return for a whole year. (TV: Aliens of London)

Owen Harper died for the first time at only 27 years old. (TV: Dead Man Walking)

The Doctor's age was widely inconsistent. The First Doctor was said to be 450 years old when he regenerated into the Second Doctor. (PROSE: Iceberg) The Seventh Doctor claimed to be 953 years old soon after regenerating, the same age as the Rani (TV: Time and the Rani), yet by the time of his war incarnation, he claimed to be 800 years old. (TV: The Day of the Doctor) The Ninth Doctor claimed to be 900 (TV: Aliens of London), with the Tenth Doctor, Eleventh Doctor and Twelfth Doctor all following on from that. The Tenth Doctor claimed that he was 903 and then 906. (TV: Voyage of the Damned, The End of Time) The Eleventh Doctor claimed that he was 907 a few days after regenerating, then 909, 1103 and then 1200. (TV: Flesh and Stone, The Impossible Astronaut, The Wedding of River Song, A Town Called Mercy) The Twelfth Doctor claimed to be around 2000 on numerous occasions. (TV: Deep Breath, Smile, Extremis)