
1 particular plot with Sheldon and Mary in Young Sheldon season 7 may have likely caused George’s unexpected death. The Young Sheldon finale wrapped up with Sheldon’s move to California for his post-graduate studies at Caltech, per The Big Bang Theory‘s official canon. However, before the boy genius wrapped up his childhood in Texas, it was preceded by a tragedy with the death of his dad. While the incident was long-established in The Big Bang Theory, details about it were unclear, including how exactly he met his end. Young Sheldon answered that question, but it also posed a new mystery.
George’s death happened at the very end of Young Sheldon season 7, episode 12, which was essentially the show’s penultimate offering. The outing was largely lighthearted and happy, with Mary’s husband getting an offer for his dream job. The family was more or less supportive, which made George’s sudden demise more disheartening. While his health issues had always been present in Young Sheldon, the heart attack that killed him may be something that was caused by Mary and Sheldon spending the past summer away from home and in Germany for the boy genius’ academic grant.