Khloé Kardashian Discovers Her 'Biological Age' Is Years Younger Than Big Sister Kim K

The 40-year-old's biological age is over a decade younger than her actual age.

July 25, 2024

Khloé Kardashian might be three years behind her older sister, Kim Kardashian, but health-wise, she's even younger.

On the season five finale of Hulu's The Kardashians, the sisters took a blood test to compare their body's biological ages to their actual ages, with Khloé's being over a decade under her calendar age of 40. According to genomics doctor, Dr. Matthew Dawson, on the epigenetic clock, Khloé's "pace of aging is .72," making her biological age that of a 28-year-old.

Per NPR.org, biological age tests or epigenetic clock tests are based on a process called DNA methylation. Chemical tags called methyl groups latch onto our DNA as we get older and produce a pattern which give researchers an indicator of biological age.

In comparison, Kim, 40, was determined to have a biological age of 34, just nine years younger.

"This is exciting news for you," Dr. Dawson told Khloé. "There's a global competition on self-rejuvenation. And right now, you would be No. 7 in the world."

In the confessional, Khloé joked that Kim was "livid" and "pissed," which in a separate confessional, Kim confirmed.

"The world needs to know that me—the fat one—is now better than the best one," Khloé said. "She was always like, 'I'm the princess," or whatever her tagline was. And my tagline on 'Keeping Up [With the Kardashians]' was, 'I'm the fat, funny sister.'"

Khloé's result might be Kim's karma for equating her to morbidly obese character Charlie, played by Brenden Fraser, in the 2022 A24 film, The Whale.