| Doctor | Cause | Answer | % Correct |
|---|---|---|---|
| 9th Doctor | Degenerated cells after absorbing the time vortex | Bad Wolf/The Parting of the Ways | 100%
|
| War Doctor | Old age | The Day of the Doctor | 100%
|
| 10th Doctor #2 | Radiation poisoning | The End of Time | 100%
|
| 11th Doctor | Granted new regeneration cycle by the Time Lords | The Time of the Doctor | 100%
|
| 12th Doctor | Shot and electrocuted by Cybermen | Twice Upon a Time | 100%
|
| 8th Doctor | Drank a regeneration concoction | The Night of the Doctor (mini-episode) | 92%
|
| 10th Doctor #1 | Shot by a Dalek | The Stolen Earth/Journey's End | 83%
|
| 7th Doctor | Failed surgeory after being gunned down | Doctor Who: The Television Movie | 75%
|
| 1st Doctor | Old age/exhaustion | The Tenth Planet | 75%
|
| 4th Doctor | Fell off a satellite dish | Logopolis | 67%
|
| 5th Doctor | Spectrox illness | The Caves of Androzani | 67%
|
| 2nd Doctor | Forced into regeneration by the Time Lords | The War Games | 67%
|
| 3rd Doctor | Radiation poisoning | Planet of the Spiders | 58%
|
| 6th Doctor | TARDIS crash | Time and the Rani | 58%
|