Christina Applegate is investigating whether her aging breast implants have been “poisoning” her after years of symptoms led to a multiple sclerosis misdiagnosis.
The 54-year-old actress, who underwent a double mastectomy in 2008 following breast cancer, revealed on Tuesday’s episode of her MeSsy podcast that she is now exploring the possibility that leaking or ruptured implants caused the debilitating health issues doctors long attributed to MS. Applegate, who co-hosts the show with Jamie-Lynn Sigler, explained that she is “way overdue” to have the implants replaced or removed.
“I had my double mastectomy in 2008 and I am way overdue for having them replaced,” Applegate told Sigler. “And I swear over the last five years or whatever, I’ve thought, ‘What if they’re leaking and poisoning me?'”
The theory gained fresh urgency after a loved one recently forwarded her medical research linking implant complications to MS-like symptoms. Applegate noted that one study specifically addressed conditions presenting as multiple sclerosis, prompting her to prioritize the investigation.
“And then there was some study… about it presenting as MS. So that’s one that I will be looking into because it’s something I’ve thought about,” she continued.
Applegate’s suspicion aligns with Breast Implant Illness, a term describing systemic symptoms including chronic fatigue, cognitive fog, joint and muscle pain, neuropathy, and autoimmune-like reactions that can mirror neurological conditions. The potential connection emerged just weeks after she stunned fans in late October by revealing that doctors had overturned her years-long MS diagnosis.
The Emmy winner, known for Dead to Me and her earlier roles on Married… With Children, described the misdiagnosis revelation as anything but relieving. Her daily physical reality remains agonizing despite the changed medical label.
“Getting my doctors to get all these tests done, that’s a lot,” Applegate shared. “It’s overwhelming. There’s so many different things that can be going on… I can’t move my right shoulder at all now. I can’t lift my arm. I’ve got all sorts of other things going on.”
Applegate detailed the severity of her condition, noting that it still takes her at least 10 minutes just to sit up and get out of bed due to full-body pain. She continues to require a wheelchair for medical visits.
While physicians run extensive panels testing for autoimmune conditions including lupus, Lyme disease, and rheumatoid arthritis, Applegate emphasized her determination to exhaust every possibility. That includes heading back into the operating room if her implants prove responsible for her suffering.
The October misdiagnosis disclosure marked a dramatic turn in Applegate’s public health journey. After years of openly discussing her supposed MS battle, she learned that the diagnosis had been incorrect all along. Rather than closure, the news triggered frustration and a grueling new phase of medical investigation to identify the true source of her symptoms.
Applegate’s candid podcast discussions have made MeSsy a prominent platform for chronic illness conversations, with Sigler, who has lived with actual MS since her teens, offering perspective from her own experience. The show’s raw approach to health struggles has drawn listeners navigating similar uncertainty in their own diagnoses.