🇺🇸 영어 원문
Cancer is strongly associated with age. The longer people live, the more opportunities their cells have to accumulate damage that can contribute to tumor growth. But cancer is increasingly being diagnosed in younger adults, and each newer generation appears to face a greater risk than the one before it.
That trend has prompted researchers to investigate a provocative possibility: Are younger generations accumulating biological damage more quickly, causing their bodies to age faster than expected?
A study led by researchers at Washington University School of Medicine in St. Louis offers evidence that this may be happening. The team found signs that younger generations are aging more rapidly on a biological level than older generations did at comparable ages.
Scientists are still working to understand what is driving these changes. The question is being investigated through international efforts involving research members of Siteman Cancer Center, based at Barnes-Jewish Hospital and WashU Medicine, and Cancer Grand Challenges, a global initiative co-founded by the National Cancer Institute and Cancer Research U.K.
Importantly, the researchers also found that accelerated biological aging was associated with a greater risk of early-onset cancers among younger generations. In general, early-onset cancers are those diagnosed at age 55 or younger.
Chronological age simply measures how many years a person has been alive. Biological age, by contrast, reflects how old the body appears based on measurable changes in cells, organs, metabolism, and other physiological systems.
According to the researchers, cancer risk increased as the difference between biological age and chronological age grew. People from more recent generations tended to have larger gaps than those born earlier, suggesting their bodies appeared biologically older at the same chronological age.
That generational shift could help explain at least part of the rise in cancer among younger adults.
The team also found that aging did not appear to affect every organ system in the same way. Faster aging in specific parts of the body was associated with particular cancers. An immune system that appeared biologically older, for example, was linked to early-onset lung cancer. Older-appearing fat tissue was associated with early-onset colorectal cancer.
Researchers say measurements of accelerated aging could eventually help doctors identify younger people who face unusually high cancer risks, potentially allowing prevention or screening to begin earlier.
“Our ultimate goal is to decode how modern environments become biologically embedded to drive cancer risk, transforming prevention from broad recommendations to personalized interventions,” said Yin Cao, ScD, a molecular epidemiologist and an associate professor of surgery and of medicine at WashU Medicine. “This brings us closer to identifying risk earlier and developing prevention strategies that are tailored to an individual’s biology.”
Cao’s team has previously studied numerous factors that can shape cancer risk over a person’s lifetime, including obesity, metabolic dysregulation, alcohol consumption, sedentary behavior, poor diet quality and cesarean delivery.
Each of these factors can provide clues about why cancer develops at younger ages. However, no single factor appears to explain very much of the overall trend on its own.
🇰🇷 한국어 요약
이번 연구는 암이 나이 많은 사람에게서 더 많이 발견되는 이유만 보는 대신, ‘생물학적 나이’라는 새로운 렌즈를 통해 왜 젊은 세대에서 암 위험이 높아질 수 있는지 살펴봐요. 생물학적 나이는 출생 연도와 다른 생체 시스템의 손상, 대사, 장기 기능 같은 지표로 몸이 얼마나 낡았는지를 반영해요. 연구팀은 최근 세대가 같은 시간적 나이에서도 생물학적으로는 더 많이 나이를 먹은 것으로 보인다고 설명해요. 이렇게 생물학적 나이가 빠르게 진행되면 특정 암 위험이 높아질 수 있어요. 면역 체계가 빨리 늙은 것처럼 보이면 폐암, 지방 조직이 빨리 늙은 것처럼 보이면 대장암과 연결될 수 있다는 점도 언급돼요. 중요한 것은 젊은 암 위험을 설명하는 요인이 하나만 있는 것이 아니라는 점이에요. 따라서 앞으로는 개인마다 환경, 생활 습관, 생물학적 지표가 어떻게 작용하는지 분석해서 더 일찍 위험을 파악하고, 맞춤형 예방과 진단으로 연결할 수 있다는 점이 핵심이에요. 청소년은 이 내용을 두려움이 아니라 ‘내 몸을 이해하는 과학적 관점’으로 보면 좋아요. 규칙적인 운동, 균형 잡힌 식사, 적절한 수면, 스트레스 관리, 금연과 절주는 기본 예방 습관이 될 수 있어요.
🔑 핵심 단어 (Vocabulary)
- chronological age – 시간적 나이, 생존 연수 – Chronological age simply measures how many years a person has been alive.
- biological age – 생물학적 나이 – Biological age, by contrast, reflects how old the body appears based on measurable changes in cells, organs, metabolism, and other physiological systems.
- accumulate – 축적하다 – The longer people live, the more opportunities their cells have to accumulate damage that can contribute to tumor growth.
- diagnosed – 진단된, 발견된 – Cancer is increasingly being diagnosed in younger adults, and each newer generation appears to face a greater risk than the one before it.
- accelerated – 가속화된, 더 빨라진 – Importantly, the researchers also found that accelerated biological aging was associated with a greater risk of early-onset cancers among younger generations.
- early-onset cancer – 조기 발병 암 – In general, early-onset cancers are those diagnosed at age 55 or younger.
- physiological – 생리학적인 – Biological age reflects measurable changes in cells, organs, metabolism, and other physiological systems.
- risk – 위험, 위험도 – According to the researchers, cancer risk increased as the difference between biological age and chronological age grew.
- prevention – 예방 – Measurements of accelerated aging could eventually help doctors identify younger people who face unusually high cancer risks, potentially allowing prevention or screening to begin earlier.
- personalized – 맞춤형의 – This brings us closer to identifying risk earlier and developing prevention strategies that are tailored to an individual’s biology.
🔗 원문 링크
https://www.sciencedaily.com/releases/2026/09/260913082200.htm