Cancer Survivors Age Faster: Study Links Treatment to Accelerated Aging & Cognitive Decline

Young adults who have survived cancer may experience a quicker pace of biological aging, and potentially face an increased risk of cognitive decline earlier in life, according to newly published research. The study, appearing in Nature Communications, reveals signs of accelerated aging not only at the cellular level but too in measures of brain function, including memory, and attention. This finding underscores the long-term health challenges faced by cancer survivors, even decades after treatment concludes.

Long-Term Survivors and Biological Age

The research, led by Dr. AnnaLynn Williams of the University of Rochester Wilmot Cancer Institute and Dr. Kevin Krull of St. Jude Children’s Research Hospital, tracked approximately 1,400 individuals who had been treated for cancer at St. Jude. All participants were at least five years past the completion of their cancer therapy, with some having survived for many years. The majority had been treated for acute lymphoblastic leukemia (ALL) or Hodgkin lymphoma. Researchers discovered evidence of faster biological aging irrespective of the specific treatment received during childhood. However, chemotherapy was notably associated with the most significant acceleration in aging.

This link between chemotherapy and accelerated aging isn’t entirely surprising, given the way the treatment works. Chemotherapy alters DNA structure and causes widespread cellular damage, which appears to have a strong impact on the aging process. Nature reports on the study’s findings in detail.

The Connection Between Cellular and Cognitive Aging

Perhaps more concerning is the strong correlation the researchers found between biological age and cognitive performance. Survivors whose biological age exceeded their chronological age demonstrated greater difficulty with tasks involving memory and attention. This suggests that the accelerated aging process isn’t merely a cellular phenomenon, but one that directly impacts brain function and potentially quality of life. These cognitive challenges can create significant hurdles as survivors navigate education, careers, and family life. As Dr. Williams notes, it can create a “perfect storm” of difficulties.

For those who received radiation therapy directed at the brain, the focus shifts to preventing further cognitive decline. The University of Rochester Medical Center highlights these concerns in a recent report.

Lifestyle Interventions and Reversing Biological Age

Despite these findings, there is reason for cautious optimism. Ongoing research at Wilmot Cancer Institute suggests that certain lifestyle modifications may assist slow down, or even reverse, some of the accelerated aging observed in young survivors. These include quitting smoking, engaging in regular exercise, and adopting a healthier diet. Here’s particularly encouraging, as these are changes individuals can actively implement to improve their long-term health.

Dr. Williams emphasizes that young cancer survivors have many decades of life ahead of them. Intervening early to address these accelerated aging changes isn’t just about extending lifespan, but also about enhancing quality of life. The goal is to help survivors not only live longer, but also maintain their cognitive function and overall well-being.

Pinpointing the Start of Accelerated Aging

Scientists are currently working to determine precisely when this accelerated aging process begins. A pilot study conducted at Wilmot examined tissue and cell samples collected before and after treatment from 50 individuals with Hodgkin lymphoma, comparing them to samples from 50 healthy individuals. Researchers, including Dr. John Ashton, analyzed the data to investigate whether aging starts during treatment or develops years later. This research is crucial for identifying potential intervention points.

Related studies are also underway at Wilmot, focusing on women with breast cancer and older adults with leukemia, all aimed at discovering ways to counteract treatment-related aging. Early results from one study have demonstrated that exercise can be beneficial in mitigating aging linked to cancer. Cancer Health provides further coverage of this emerging research.

What Comes Next: Ongoing Research and Surveillance

The National Cancer Institute provided funding for Dr. Williams’ study, highlighting the importance of this research area. Future efforts will likely focus on larger-scale studies to confirm these findings and identify specific biomarkers that can predict which survivors are at greatest risk of accelerated aging and cognitive decline. Continued surveillance of long-term cancer survivors will be essential to monitor their health and provide timely interventions. Researchers are also exploring the potential of personalized interventions, tailored to individual risk factors and treatment histories.

It’s important for cancer survivors to maintain regular check-ups with their healthcare providers and discuss any concerns they may have about their cognitive function or overall health. Adopting a healthy lifestyle, including regular exercise, a balanced diet, and avoiding smoking, can also play a significant role in promoting long-term well-being. For individuals who have received radiation therapy to the brain, ongoing monitoring and support are particularly important.