Warning: Contains spoilers for Thor: Love and Thunder.
One Thor: Love and Thunder fan theory was not confirmed by the movie, and it avoided making a huge Jane Foster mistake. After appearing in Thor and Thor: Dark World, Natalie Portman’s Jane Foster was absent from the MCU for a long time with the exception of a couple of references and an image confirming that she was a victim of Thanos’ snap. However, Thor: Love and Thunder sees her return as Mighty Thor, following some bittersweet elements of her Marvel comics story.
In Thor: Love and Thunder it is revealed that Jane Foster is suffering from stage 4 cancer and is working on trying to find a cure with the help of Erik Selvig but to no avail. Turning to other avenues, Jane seeks out the remains of Mjolnir which have called to her and it recombines and she becomes Mighty Thor. However, the use of Mjolnir gives her temporary strength but prevents her body from properly fighting the cancer and ultimately Jane dies at the end of Thor: Love and Thunder.
Related: Gorr's Daughter Love Explained: Eternity Origin & Powers
When Jane was confirmed to be returning as Mighty Thor in Thor: Love and Thunder, fans began to theorize how and why this might happen in the MCU. A common theory around Jane's powers and cancer was that, as she did in the comics, Jane would suffer from cancer, but that the cause of her cancer would have been attributed to her connection to the Aether (the Reality Stone) in Thor: Dark World. While this might have tied Jane’s story together with an additional element, Thor: Love and Thunder not connecting Jane’s cancer to the Aether makes her story arc much stronger and avoids some potentially problematic elements.
In the Marvel comics, Jane Foster was
Read more on screenrant.com