Inflammaging and Sarcopenia: Nutrients | June 2026

• Inflammaging and sarcopenia are two interconnected hallmarks of aging that contribute to frailty, disability, metabolic dysfunction, loss of independence, and reduced quality of life.
• Inflammaging refers to chronic low-grade systemic inflammation that develops with aging, even in the absence of overt infection or disease.
• Sarcopenia is characterized by progressive loss of muscle mass, strength, and physical performance, and is increasingly recognized as a major determinant of healthy aging.
• The relationship is bidirectional: chronic inflammation accelerates muscle breakdown, while loss of muscle mass further promotes inflammation and metabolic dysfunction.
• Several common biological pathways link inflammaging and sarcopenia, including:

NF-κB activation

Mitochondrial dysfunction

Oxidative stress

Impaired AMPK–mTOR signaling

Reduced cellular stress resilience

• Regular physical activity remains the most consistently effective intervention for preserving muscle function and reducing age-related inflammatory burden.
• Exercise improves mitochondrial function, insulin sensitivity, anabolic signaling, antioxidant defenses, and immune regulation.
• A growing body of evidence supports the role of bioactive dietary compounds in modulating aging-related pathways.
• Important bioactive compounds discussed include:

Polyphenols

Flavonoids

Carotenoids

Omega-3 fatty acids

• These compounds appear to influence several key pathways involved in healthy aging, including NF-κB, Nrf2, AMPK, mitochondrial metabolism, and redox homeostasis.
• Anti-inflammatory dietary patterns, particularly Mediterranean-style diets, are associated with better muscle strength, physical performance, and lower inflammatory burden.
• The review introduces a geroscience framework, emphasizing that interventions should target fundamental biological aging mechanisms rather than individual diseases alone.
• A key concept is hormesis, whereby mild biological stress from exercise or certain nutritional compounds activates adaptive cellular defense mechanisms that improve resilience.
• Current evidence suggests that exercise and nutritional bioactives often converge on similar molecular pathways, potentially producing complementary benefits.
• However, the authors caution that true biological synergy has not yet been conclusively demonstrated in humans.
• Significant challenges remain regarding optimal dosing, bioavailability, duration of intervention, patient selection, and long-term clinical outcomes.
• Future studies should focus on integrated lifestyle approaches rather than evaluating exercise and nutrition as isolated interventions.

Bottom line: Inflammaging and sarcopenia are closely linked drivers of biological aging. Regular exercise, healthy dietary patterns, and selected bioactive compounds target many of the same molecular pathways and represent promising non-pharmacological strategies to preserve muscle function, metabolic health, and healthy aging.