Christina Applegate has a theory about what may have caused her multiple sclerosis-like symptoms after revealing she was misdiagnosed. “I had my double mastectomy in 2008 and I am way overdue for having them replaced,” Applegate, 54, said during the Tuesday, November 10, episode of her and Jamie Lynn Sigler’s “MeSsy” podcast. The Dead to Me alum added, “And I swear over the last five years or whatever, I’ve thought, ‘What if they’re leaking and poisoning me?’ And then there was some study … about it presenting as MS. So that’s one that I will be looking into because it’s so...