Allostatic Load Emerges as a Risk Marker for Early-Onset Cancer

Early-onset cancers—defined as cancers diagnosed before age 50—have increased dramatically over the past two decades, yet existing risk prediction models often fail to identify who is most at risk. At the 2026 ASCO Annual Meeting, investigators presented findings from a multinational analysis exploring whether allostatic load, a measure of the cumulative physiologic effects of chronic stress, could help explain and predict this growing public health challenge.

In an on-site interview at the 2026 ASCO Annual Meeting, Ravi B. Parikh, MD, MPP, genitourinary medical oncologist at Winship Cancer Institute of Emory University and associate professor at Emory University School of Medicine, discusses the rationale for the study, including why traditional models based on family history, isolated genetic variants, or individual environmental exposures have had limited success in predicting early-onset cancers.

Drawing on data from both the UK Biobank and the NIH All of Us Research Program, the research team evaluated more than 13,000 adults and found that higher allostatic load was independently associated with an increased risk of developing early-onset cancer. Parikh highlights how allostatic load accounted for a meaningful proportion of environmental cancer risk across these 2 distinct populations, highlighting its potential value as a future component of risk stratification models.

The findings ultimately offer insight into emerging approaches for identifying patients at elevated risk of early-onset cancer and underscore the need to look beyond genetics alone when considering cancer prevention and screening strategies.