Journal September 27, 2026 5 min read

Common misconceptions about inflammaging

Inflammaging is the chronic, low-grade, sterile inflammation that accompanies ageing. This page corrects common misconceptions and summarises what the evidence does and does not show.

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What inflammaging actually is

Inflammaging is the formal term for the chronic, low-grade, systemic inflammation that develops with age in the absence of overt infection. It is not a disease and has no agreed diagnostic criteria; it is a research construct used to organise observations about ageing biology. Synonyms in the literature include "age-related chronic low-grade inflammation" and "chronic sterile inflammation of ageing." The term does not refer to a single molecule, so no sequence, formula, or molecular weight applies. Inflammaging is studied as a class of processes rather than a compound.

The work centres on inflammatory signalling pathways, particularly those involving interleukins such as IL-6, and on the senescence-associated secretory phenotype (SASP) that links cellular senescence to chronic inflammation [3][10].

Research Studies

Inflammaging and sarcopenia in older adults

A narrative review of sarcopenia mechanisms reported that the condition results from interactions among mitochondrial dysfunction, chronic low-grade inflammation (inflammaging), cellular senescence, neuromuscular junction degeneration, and anabolic resistance [3]. The review described these as central early mechanisms and noted that they remain incompletely understood, limiting early diagnostic strategies. The population discussed was older adults with sarcopenia.

Myokines and the muscle-brain axis in ageing

A narrative review synthesised evidence on how skeletal muscle communicates with the ageing brain through myokines and exerkines, including irisin/FNDC5, BDNF, IL-6, IGF-1, cathepsin B, and GDF-15 [2]. The review proposed that progressive sarcopenia disrupts this signalling and may accelerate cognitive impairment. The findings were drawn from mechanistic and translational studies in older adults; the review is a synthesis, not a primary trial.

Inflammaging and the heart-brain-bone axis

A review of lipid-soluble nutrients (omega-3, vitamin D3, and vitamin K2) described a "Heart-Brain-Bone" axis as an integrative conceptual framework, not a validated physiological entity [1]. The authors noted that cardiovascular disease, neurocognitive decline, and osteoporotic bone loss may be coupled through shared regulators of calcium trafficking, inflammation resolution, vascular integrity, and inflammaging. The evidence was drawn from three separate studies and the framework has no agreed diagnostic criteria or demonstrated modifiability.

Glucose metabolism and inflammaging in elderly subjects

A clinical study protocol described an investigation to characterise glucose metabolism and inflammaging in elderly subjects (≥70 years old) and to correlate insulin secretion/sensitivity with muscle quality and quantity in diabetic and non-diabetic individuals [6]. The investigators planned to compare healthy, sarcopenic, diabetic, and diabetic/sarcopenic groups to identify an oxidative/inflammatory signature specific to the sarcopenic phenotype. This was a study design, not a completed trial with results.

Alpha ketoglutarate and surgical stress in older patients

A clinical trial protocol (AEGIS) described the surgical stress response to coronary artery bypass grafting (CABG) in older patients, including a 33-fold increase in systemic epinephrine and a 3-fold increase in norepinephrine [4]. The protocol noted that local tissue injury releases damage-associated molecular patterns (DAMPs), which activate neutrophils and trigger cytokine, complement, and coagulation cascades. The trial was designed to test alpha ketoglutarate for geroprotection in this context; no results were reported in the evidence.

Dietary micronutrients and inflammaging in cardiovascular risk

A clinical study protocol (Cardiovascular and InflammAging Study) described evidence linking fruit and vegetable consumption to reduced cardiac risk, possibly mediated by improvements in blood pressure, platelet function, and vascular reactivity [5]. The protocol noted that certain vitamins and polyphenols have antioxidant and anti-inflammatory effects and that omega-3 fatty acids have been associated with cardiovascular and inflammatory effects. The study was designed to investigate these relationships; no outcomes were reported in the evidence.

Inflammaging in ovarian ageing and systemic health

A review reported that ovarian ageing may contribute to systemic ageing via an ovarian-systemic axis, with intrinsic ovarian cellular defects such as genomic instability, epigenetic shifts, and mitochondrial and proteostasis damage triggering SASP-related inflammaging and fibrosis [10]. The findings were synthesised from mechanistic studies; the review is a conceptual synthesis, not a clinical trial.

Inflammaging in intracranial aneurysm and vascular ageing

A review reported that vascular ageing is driven by cellular senescence, chronic inflammation, and hemodynamic stress, and that these processes may contribute to the formation, growth, and rupture of intracranial aneurysms [8]. The evidence was drawn from observational and mechanistic studies; the review is a synthesis, not a primary trial.

Inflammaging in skin ageing

A review described skin ageing as a multifactorial process modulated by intrinsic genetic programming and extrinsic environmental stressors, with molecular signatures including telomere attrition, mitochondrial dysfunction, epigenetic drift, and inflammaging [9]. The findings were synthesised from mechanistic studies; the review is a conceptual synthesis, not a clinical trial.

DNA damage response and inflammaging

A hypothesis paper proposed that chronic, largely mutation-independent overactivation of the DNA damage response (DDR) is an integrating node in ageing, dysregulating tumour-suppressor networks and other guardian pathways [7]. The paper is a hypothesis, not a primary study, and the evidence does not establish causality in humans.

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