Handgrip strength emerges as a measurable physiological marker that modulates the relationship between depression and cancer risk in adults over 50, suggesting that muscular capacity may buffer against depression-related carcinogenic pathways. This finding bridges physical resilience with psychological state and cancer incidence, identifying a specific, quantifiable biomarker relevant to aging populations.
Key Points
- Handgrip strength moderates depression-cancer relationship in older adults
- Physical capacity may buffer neuropsychological stress-induced cancer pathways
- Large European cohort (93,545 adults, 28 countries) supports generalizability
Longevity Analysis
Depression and cancer represent distinct but mechanistically overlapping threats in aging. The association between handgrip strength and the depression-cancer relationship indicates that muscular integrity—a marker of energy production capacity and stress resilience—may protect against the systemic inflammatory and endocrine disruptions that link psychological distress to malignancy. Rather than viewing these as separate pathologies, this research suggests that physical capacity influences how the body's nervous system, hormonal signaling, and defense mechanisms respond to chronic emotional strain. For practitioners working with aging populations, handgrip strength becomes a simple, objective measurement that may predict vulnerability to both depression-associated cancer risk and, conversely, capacity for resilience.
Original published by SAGE Research on Aging, by Rizwan Qaisar, M. Azhar Hussain, Asima Karim, Firdos Ahmad, Salma Naheed, Khalid Saeed, Ahmed M. Abdel Salam Mohamed, Shaea A. Alkahtani1Basic Medical Sciences, College of Medicine, 59105University of Sharjah, Sharjah, United Arab Emirates2Space Medicine Research Group, Research Institute for Medical and Health Sciences, 59105University of Sharjah, Sharjah, United Arab Emirates3Cardiovascular Research Group, Research Institute for Medical and Health Sciences, 59105University of Sharjah, Sharjah, United Arab Emirates4Department of Finance and Economics, College of Business Administration, 59105University of Sharjah, Sharjah, United Arab Emirates5Department of Social Sciences and Business, Roskilde University, Roskilde, Denmark6Shifa College of Medicine, 384986Shifa Tameer-e-Millat University, Islamabad, Pakistan7The In Silico Drug Discovery Group, Institute for Molecular Medicine Finland, 3835University of Helsinki, Helsinki, Finland8Department of Biomechanics & Motor Behavior, College of Sport Sciences and Physical Activity, 37850King Saud University, Riyadh, Saudi Arabia9Exercise Physiology Department, College of Sport Sciences and Physical Activity, 37850King Saud University, Riyadh, Saudi Arabia.