NEW YORK — Tatiana Schlossberg, the granddaughter of former U.S. President John F. Kennedy, has revealed that she has been diagnosed with an aggressive form of cancer and has been given less than a year to live.

The 35-year-old journalist shared the news in a personal essay published in The New Yorker on Saturday, coinciding with the 62nd anniversary of her grandfather’s assassination.

Schlossberg, the daughter of former U.S. Ambassador Caroline Kennedy and an environmental and climate writer, said she was diagnosed with acute myeloid leukemia shortly after giving birth in May 2024.

She wrote that despite her previously active lifestyle, which included running, skiing, and even swimming in the Hudson River to raise money for the Leukemia and Lymphoma Society, doctors have told her that her prognosis is grim.

“During the latest clinical trial, my doctor told me that he could keep me alive for a year, maybe,” she wrote, adding that her first fear was that her young children — a son born in 2022 and a daughter born in 2024 — might grow up without remembering her.

Her essay also reflects on the emotional weight of the diagnosis within a family already marked by loss. Schlossberg was a toddler when her grandmother, Jacqueline Kennedy Onassis, died of cancer, and her uncle John F. Kennedy Jr. died in a plane crash at 38.

“For my whole life, I have tried to be good, to be a good student and a good sister and a good daughter,” she wrote. “Now I have added a new tragedy to her life, to our family’s life, and there’s nothing I can do to stop it.”

Schlossberg has been an outspoken critic of her second cousin, Robert F. Kennedy Jr., who serves as U.S. health secretary under President Donald Trump. From her hospital bed, she said she watched with alarm as he was approved for the post despite his lack of medical or public-health experience.

“Suddenly, the healthcare system on which I relied felt strained, shaky,” she wrote.

Earlier this month, her brother Jack Schlossberg announced plans to run for Congress in New York. Sharing his sister’s essay on Saturday, he wrote, “Life is short — let it rip.”

The Kennedy family’s long political legacy and history of personal tragedy have shaped its prominent role in American public life for generations. Schlossberg’s essay adds another deeply personal chapter to that story. — Agencies