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Sadie Grace LeNoble is the daughter of actor Christina Applegate and musician Martyn LeNoble. In a public conversation on her mother’s podcast in 2024, Sadie spoke about her POTS diagnosis and said that living with symptoms helped her understand some of what her mother experiences with multiple sclerosis. She was reported as 15 by AARP on March 2, 2026; that is her age as of that report, not a calculation of her age today.
Who is Sadie Grace LeNoble?
Sadie is the daughter of Christina Applegate and musician Martyn LeNoble. The Los Angeles Times used the fuller name Sadie Grace Applegate LeNoble in its June 26, 2024 coverage; AARP referred to her as Sadie in a March 2, 2026 interview with Applegate.
Sadie’s public record in these reports is limited to selected family and health disclosures. They do not establish details about her current schooling, daily life, or medical care.
How old is Sadie?
AARP reported on March 2, 2026, that Applegate and LeNoble have a 15-year-old daughter, Sadie. Good Morning America had described Sadie as 13 on June 26, 2024. These are ages reported on those dates; without a verified birth date, they should not be treated as an exact age on a later date.
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What has Sadie said about her POTS diagnosis?
In a June 2024 episode of the MeSsy podcast, hosted by Applegate and Jamie-Lynn Sigler, Sadie said she had been diagnosed with POTS earlier that spring. POTS is short for postural orthostatic tachycardia syndrome. Her account is a personal disclosure, not an independent medical assessment.
Good Morning America quoted Sadie describing dizziness, weak legs and feeling as though she might pass out when she stood up. She also said she had fainted and lost consciousness. The Los Angeles Times reported that she described symptoms affecting school. These details reflect what Sadie shared publicly; they do not establish anything about her present symptoms or care.
How did Sadie connect her experience to her mother’s MS?
Sadie said that experiencing POTS helped her empathize with some of her mother’s experiences with multiple sclerosis (MS). The conditions are distinct; her comparison was about understanding her mother’s experience, not a claim that one condition caused the other.
Applegate responded with support. The Los Angeles Times reported her saying: “I love you and I know you’re going to be OK. And I’m here for you and I believe you. And thank you for bringing this to light and awareness.”
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What else has Christina Applegate shared?
Applegate’s memoir, You with the Sad Eyes, is about her own life, including motherhood and health—not a biography of Sadie. The Associated Press identified Little, Brown and Co. as the publisher in its March 3, 2026 report on the book. It may offer additional context about Applegate, but it should not be read as a fuller account of her daughter’s private life.
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