Forever Health

Introduction

There is a slow-burning fire inside many of us — and most of us don’t even know it’s there. Scientists call it inflammaging, a portmanteau of “inflammation” and “aging” coined by Italian immunologist Claudio Franceschi. Unlike the acute, purposeful inflammation your body triggers when you cut a finger or catch a cold, inflammaging is a chronic, low-grade immune activation that simmers silently for decades. It doesn’t announce itself with redness or swelling. Instead, it quietly remodels your biology — raising the risk of heart disease, type 2 diabetes, Alzheimer’s disease, and cancer simultaneously.

At the heart of inflammaging is a cellular mechanism that has captured the attention of the world’s leading longevity scientists: the Senescence-Associated Secretory Phenotype, or SASP. Senescent cells — sometimes called “zombie cells” — are cells that have stopped dividing but refuse to die. As they accumulate with age, they secrete a toxic cocktail of pro-inflammatory cytokines, chemokines, and proteases that corrupt neighboring tissue and sustain the very inflammation that accelerates aging. Understanding and targeting SASP may be one of the most important frontiers in 21st-century medicine.

What the Experts Are Saying

Andrew Huberman, Ph.D., professor of neurobiology at Stanford, has highlighted the bidirectional relationship between the nervous system and immune function. In his landmark episode on enhancing immune health, Huberman explains that neurochemicals called catecholamines — released through deliberate breathing, cold exposure, and specific exercise patterns — can modulate inflammatory signaling at the cellular level. “The nervous system doesn’t just respond to the immune system,” Huberman notes; “it actively controls it.” This means that lifestyle behaviors directly influence the inflammatory tone of the body, including the SASP-driven inflammation characteristic of aging.

Peter Attia, M.D., physician and host of The Peter Attia Drive, has dedicated significant attention to distinguishing healthy acute inflammation from the pathological chronic kind. In his 2024 AMA episode on inflammation, Attia emphasizes that biomarkers like high-sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6) are not merely risk markers — they are active drivers of cardiovascular disease, metabolic dysfunction, and cognitive decline. “Chronic inflammation is one of the biggest levers we can pull in terms of reducing all-cause mortality,” Attia explains, pointing to exercise, sleep optimization, and dietary interventions as the most evidence-backed tools.

Mark Hyman, M.D., functional medicine physician and bestselling author, describes inflammaging as “the hidden cause of aging and disease.” Hyman argues that modern ultra-processed diets, sedentary lifestyles, and chronic stress have created a perfect storm for SASP amplification. He emphasizes removing inflammatory triggers — refined sugars, industrial seed oils, and excess processed foods — as the first and most powerful step. “What you eat three times a day is either turning on genes for inflammation or turning them off,” Hyman explains.

Dr. Judith Campisi, Ph.D., a pioneering gerontologist at the Buck Institute for Research on Aging, whose research was featured on Dr. Rhonda Patrick’s FoundMyFitness platform, has documented how SASP creates a “paracrine senescence” cascade — where one senescent cell’s secretions can induce senescence in neighboring healthy cells. Campisi’s research, covered extensively by Rhonda Patrick, Ph.D., shows that suppression of inflammation is one of the key biomarkers associated with extreme longevity in centenarian cohorts.

The Science Behind It

Senescent cells are a normal part of biology — they emerge after DNA damage, oncogene activation, or replicative exhaustion, and they play a crucial short-term role in wound healing and tumor suppression. The problem arises when these cells accumulate faster than the immune system can clear them, which is precisely what happens as we age and immunosenescence (age-related immune decline) sets in.

The SASP includes potent signaling molecules: TNF-α, IL-1β, IL-6, IL-8, MMP-3, and MMP-9. These factors promote atherosclerotic plaque development, disrupt insulin signaling, drive neuroinflammation, and create a tissue microenvironment favorable to cancer progression. A 2025 review published in Frontiers in Immunology confirmed that senescent cell accumulation activates pro-inflammatory pathways including NF-κB and mTOR, creating a self-reinforcing feedback loop: SASP weakens immune clearance, which allows more senescent cells to accumulate, which produces more SASP.

Emerging interventions — including senolytics (compounds like quercetin and dasatinib that selectively clear senescent cells), senomorphics (agents that suppress SASP without killing senescent cells), and therapeutic plasma exchange (apheresis) — are now in early clinical trials as of 2025, showing promise for reducing systemic inflammatory burden and improving tissue function in aging populations.

Key Benefits

Research suggests that successfully reducing inflammaging and SASP burden may produce the following benefits:

• Cardiovascular protection: Lower IL-6 and hs-CRP levels are associated with significantly reduced risk of myocardial infarction, stroke, and arterial stiffness. Chronic inflammation is now considered a primary, not secondary, driver of atherosclerosis.
• Improved cognitive function: Neuroinflammation driven by SASP is implicated in Alzheimer’s disease, Parkinson’s disease, and age-related cognitive decline. Reducing systemic inflammation appears to slow the progression of neurodegenerative processes in preclinical and observational studies.
• Better metabolic health: TNF-α and IL-1β directly impair insulin receptor signaling, contributing to insulin resistance and type 2 diabetes. Anti-inflammatory lifestyle interventions are associated with improved glucose regulation.
• Enhanced immune resilience: A chronically inflamed immune system is a dysregulated one — prone to overreacting to harmless stimuli (autoimmunity) while underperforming against real threats. Reducing basal inflammation restores immune balance and pathogen-fighting capacity.
• Reduced cancer risk: The paracrine effects of SASP can promote tumor growth and therapy resistance. Senolytic strategies that reduce SASP may lower cancer incidence in aging tissues.
• Healthspan extension: Population studies consistently show that lower inflammatory biomarkers in midlife predict healthier aging, greater physical function, and longer independence well into later decades.

How to Get Started

The good news is that the most powerful anti-inflammaging tools are accessible and free. Zone 2 aerobic exercise — think brisk walking, cycling, or swimming at a pace where you can hold a conversation — performed 150–200 minutes per week has been shown to reduce senescent cell burden and lower circulating SASP cytokines. Sleep optimization is equally critical: a single night of poor sleep acutely elevates IL-6 and TNF-α, and chronic sleep deprivation is one of the most reliable drivers of inflammaging. Prioritize 7–9 hours in a cool, dark room.

Dietary shifts matter enormously. Transition toward a whole-food, Mediterranean-style diet rich in omega-3 fatty acids, polyphenols, cruciferous vegetables, and fiber — all of which have demonstrated anti-inflammatory and senomorphic properties. Reduce or eliminate ultra-processed foods, refined sugars, and industrial seed oils. Time-restricted eating (eating within an 8–10 hour window) has shown promise in lowering hs-CRP in clinical trials. Consider asking your physician to check your baseline hs-CRP and IL-6 to establish a starting point for monitoring progress.

What to Watch Out For

Not all inflammation is the enemy. Acute inflammatory responses are essential for healing injuries, fighting infections, and building fitness adaptations from exercise. Aggressively suppressing all inflammation — for example, through chronic NSAID use — can impair recovery, disrupt gut microbiome health, and mask warning signs of underlying conditions. Proceed with balance, not elimination.

Be cautious with self-prescribing senolytics like quercetin and dasatinib. While early clinical trials show promise, these agents are still being studied in humans, and dasatinib is a prescription chemotherapy drug with meaningful side effects. Do not begin a senolytic protocol without medical supervision. Similarly, not all supplements marketed as “anti-inflammatory” are backed by robust clinical evidence — be skeptical of bold claims and look for peer-reviewed trial data.

If you have an autoimmune condition, inflammatory bowel disease, or are immunocompromised, any changes to diet, fasting protocols, or supplementation should be discussed with your rheumatologist or specialist before implementation. Inflammation is complex — and your individual immune landscape matters.

Watch the Full Expert Videos

Andrew Huberman, Ph.D.: Using Your Nervous System to Enhance Your Immune System — Huberman Lab Podcast #44

Andrew Huberman & Dr. Roger Seheult: How to Enhance Your Immune System (February 2025) — Huberman Lab on YouTube

Mark Hyman, M.D.: How to Reduce Inflammaging and Feel Better Today — The Doctor’s Farmacy

Peter Attia, M.D.: AMA #59: Inflammation — Its Impact on Aging and Disease Risk (2024) — The Peter Attia Drive

Rhonda Patrick, Ph.D. & Judith Campisi, Ph.D.: Cellular Senescence, Mitochondrial Dysfunction, Cancer & Aging — FoundMyFitness

Note: Expert content for this post was sourced via published research summaries, podcast episode notes, and publicly available expert publications (Method C — web research fallback). Full episodes are available on each expert’s respective YouTube channel linked above.