Inflammaging is the persistent, chronic inflammatory state associated with advancing age. Unlike acute inflammation—a short-term response to infection or injury—it can continue without an obvious external trigger. It is associated with cardiovascular disease, diabetes, cognitive decline, frailty, and other age-related conditions.

Its origins remain incompletely understood. Rather than a single malfunction, inflammaging appears to involve a self-reinforcing cycle: damaged tissues stimulate inflammation, while altered immunity and impaired cellular cleanup allow further damage.

What Sustains the Inflammatory Cycle?

Several interconnected processes contribute:

• Immune aging: Protective responses become less effective, while some immune cells sustain inflammatory signaling. Aging T cells change their behavior, and blood-forming stem cells increasingly favor myeloid cells over lymphoid cells. Age-associated mutations in these stem cells, called clonal hematopoiesis, can further increase inflammatory activity.
• Cellular senescence: Cells stop dividing but remain metabolically active, releasing inflammatory substances through the senescence-associated secretory phenotype, or SASP. Senescence supports normal repair and cancer protection, but persistent senescent cells can damage surrounding tissues.
• Impaired cellular cleanup: Less effective removal of damaged cells and debris prolongs immune activation. Macrophage behavior varies across tissues; aging does not make every macrophage uniformly more inflammatory.
• Mitochondrial dysfunction: Damaged cellular energy systems generate oxidative stress and release signals, including misplaced mitochondrial DNA, that activate inflammation.
• Gut changes and visceral fat: Microbiome imbalance, increased intestinal permeability, and excess abdominal fat can add to inflammatory signaling.

Poor diet, inactivity, smoking, pollution, disrupted sleep, and chronic stress can amplify these processes.

Why “Low-Grade” Does Not Mean Unimportant

Circulating inflammatory markers, including interleukin-6 and tumor necrosis factor, may overlap with levels measured during mild infections. This does not mean that aging and infection are equivalent illnesses. The concern is prolonged exposure and its relationship to tissue damage and disease.

Inflammaging is associated with atherosclerosis, metabolic disease, neurodegeneration, arthritis, kidney disease, certain cancers, muscle loss, and frailty. These relationships run both ways: inflammation may contribute to disease, while existing illness sustains inflammation.

Centenarians offer an important insight. Some have elevated inflammatory markers yet appear better able to limit downstream damage. Healthy aging may therefore depend on effectively regulating and resolving inflammation—not simply on achieving the lowest possible cytokine levels.

Practical Ways to Support Healthy Aging

Nutrition and Movement

Follow a Mediterranean-style eating pattern emphasizing vegetables, fruits, legumes, whole grains, nuts, fish, and olive oil. Fiber-rich foods and fermented foods support gut health. Limit ultra-processed foods, sugary drinks, processed meats, and excessive alcohol.

Maintain adequate protein intake to preserve muscle, individualized for health status and kidney function. Reducing excess abdominal fat also supports metabolic health.

Aim for at least 150 minutes of moderate-intensity activity weekly and resistance training on two or more days. Add balance exercises and interrupt prolonged sitting. People with chronic conditions should progress gradually with medical guidance.

Sleep, Stress, and Prevention

Prioritize consistent, restorative sleep and seek evaluation for persistent insomnia or suspected sleep apnea. Support emotional well-being through social connection, meaningful activities, and stress-management practices.

Avoid tobacco, maintain dental care, and stay up to date on recommended vaccinations and preventive screenings. Manage blood pressure, blood glucose, and cholesterol.

Supplements and Emerging Treatments

Supplements are not substitutes for healthy habits. Many studies report changes in inflammatory markers rather than improvements in disability, disease, or longevity.

Omega-3 supplements may lower triglycerides and some inflammatory markers, but higher doses warrant discussion because of atrial fibrillation risk and medication interactions. Vitamin D or magnesium may help when deficiency or inadequate intake is present. Probiotic benefits vary, and use cautiously with immunocompromised patients.

Curcumin, coenzyme Q10, and other “anti-aging” supplements have mixed or limited evidence. Experimental approaches—including senolytics that eliminate senescent cells and senomorphics that modify their secretions—require further clinical evaluation.

Routine aspirin or long-term anti-inflammatory medication should not be used solely to counter aging; potential harms can outweigh benefits.

Key Takeaways

• Inflammaging reflects interacting changes in immunity, tissue damage, senescence, and cellular cleanup.
• The goal is balanced immune function—not indiscriminate suppression of inflammation.
• Healthy habits and appropriate medical care remain the practical foundation.
• Biomarker improvements alone do not establish longer or healthier life.
• Targeted treatments are promising, but must preserve infection defense, tissue repair, and other protective functions.