The Kardashians have lately covered plenty of medical drama, from Kris Jenner's hysterectomy to Kim Kardashian breaking the tip of her finger in an accident. Now, in the latest episode of The Kardashians, Kim, Kris, Khloé Kardashian, and Scott Disick took the groundbreaking 'Horvath test' to determine their biological ages. The test, which measures cellular aging, revealed that 40-year-old Khloé has the cellular age of a 28-year-old. While Kim, 43, has the biological age of 35 and 68-year-old Kris is at a cellular age of 64. These results shocked the Kardashians as well. Khloe, who was visibly surprised said, "Never in a million years! If I had to bet money, I would’ve never bet on myself... Kim is livid, by the way."What is biological age?Biological age differs from chronological age, reflecting how old a person seems at a cellular level. There are a lot of factors that influence biological age which include genetics, lifestyle, environment, and health conditions. Tests like the Horvath test offer insights into one's aging process and may prompt lifestyle changes aimed at healthier aging.But how does the test work?These tests analyze DNA methylation patterns by collecting a blood sample and examining it in a lab. Techniques include measuring telomere length, evaluating biomarkers in blood, and assessing overall health functions. Dr. Shrinidhi Nathany from Fortis Memorial Research Institute explains that AI-powered software compares the results with population data to assess aging speed and potential health risks.Is it available in India?The Horvath test is not available in India, however, similar tests including Meand32 test, are offered by diagnostic labs and wellness centers such as Dr Lal PathLabs and SRL Diagnostics. However, the tests are expensive, with costs ranging from Rs 1-3 lakh, due to advanced techniques and the nascent stage of the field. Dr. Basavaraj S Kumbar of Aster Whitefield Hospital notes that high costs and uncertain accuracy, as these tests are still developing, pose significant barriers.While biological age tests offer intriguing insights, they cannot reverse aging. To look younger, experts advise focusing on healthy living practices such as a balanced diet, regular exercise, and stress management over worrying about test results.