Board Thread:Manga/@comment-5774380-20170407184255/@comment-24036697-20170409232720

Nuclearnyancat wrote:  Eren is either dead or very near death. Let's do some math: At the time a person inherits titan shifting ability, they have only 13 years to live. It's been 4 years since they reached the Ocean, and he was around 16 then. So he is 20 now (in chapter 91 and 96). Based on analysis, we can say that Eren gained titan ability at the age of 7. So, at the time they reached the ocean, he had around 4 years to live... guess how many years it has been since then. Four. This is going to reach a conclusion very fast. We know that both Zeke and Reiner are nearing the end of their 13 years based on the dialog in the last two chapters. If Annie inherited her shifting powers around the same time, she is as well. If we subtract 13 years from 854 (the current year as of chapter 92), we get 841 as the year Zeke, Reiner, and Annie became shifters.

Eren, however, didn't get his powers until 845 (when his father passed down his shifting powers) at the age of 10, which means he still has 4 years before he dies (when he will be about 23).