Board Thread:Manga/@comment-5774380-20170508180431/@comment-14745711-20170520135610

Uhuh, this "highly realistic world", where invisible connections exist between all things, allowing people of a certain bloodline to summon giant human eating bodies out of thin air. SnK is already dealing with matters that are most certainly not in line with real world science. Plus, the Curse of Ymir is just a name for a side effect from Titan-shifting, not an actual curse that someone placed on the Eldians. If you wanna be sciency we could say that the "Curse of Ymir" is a genetic defect like cancer that infects you once you receive a Titan, and takes about 13 years to kill you. There is no reason for the "Curse" not to be real.