Inflammaging: The Slow inflammatory Hum
Inflammation has two completely different reputations and only one mechanism. Acute inflammation is visible, brief, and unmistakably healing — the heat, redness, and swelling around a cut that resolves in days. Chronic inflammation is neither. It produces no symptoms at all, has no clear origin, and never receives the signal to stand down. Researchers named the age-associated form inflammaging because it rises steadily with the decades and sits underneath a surprising share of what we treat as normal aging.
This guide offers general educational context, not individualized medical direction. If you are considering peptide therapy, confirm suitability through a personal consultation with a licensed clinician before purchasing or beginning treatment.
Two kinds of inflammation
An acute response has a beginning and an end. It is triggered by a pathogen or injury, it recruits immune cells, it clears the problem, and then it actively resolves — a program with its own braking signals and specialized pro-resolving mediators. Chronic inflammation lacks the endpoint. The trigger may be invisible or ongoing: a fat depot that will not shrink, a gut barrier that leaks, a dental infection that never fully clears. The immune system continues to behave as though there is something to finish, at low intensity, for years.
Where it starts
Several sources are common and measurable. Visceral fat — the fat around the organs rather than under the skin — is not inert storage; it is a metabolically active tissue that secretes inflammatory cytokines and recruits immune cells of its own. The gut contributes through barrier integrity: bacterial fragments that stay inside the intestine are harmless, but when they cross a softened barrier they enter circulation and the immune system treats them as an intrusion. Senescent cells — cells that have stopped dividing but refuse to be removed — secrete a mixture of inflammatory signals that bystanders respond to. Periodontal disease, chronic viral latency, persistent joint injury, and a diet and sleep pattern that never allows resolution all add to the same field.
What it does over years
The cost is distributed across the body. Muscle becomes less responsive to the amino acids and hormones that normally maintain it, so lean mass falls faster than inactivity alone would predict. Insulin signaling is interfered with directly by inflammatory cytokines, which is one reason visceral fat and glucose control travel together. Arterial plaque is not primarily a fat deposit but an inflammatory process in the vessel wall. In the brain, resident immune cells shift toward a state associated with duller cognition and lower mood. Bone turnover tilts toward resorption. And collagen — the structural protein of skin, tendon, and artery — is remodeled less cleanly, which is visible externally and consequential internally.
How it is read
Inflammation is not usually assessed with one dramatic number. High-sensitivity CRP, fibrinogen, and interleukin-6 give a general sense of the field; ferritin, HbA1c, and lipids contextualize it; a clinician will often look at the pattern across visits rather than a single reading, since any one value is moved by a recent workout, a cold, or a poor week. Gum health and a dental exam belong in the same conversation as bloodwork. The useful question is rarely 'is my inflammation high' and more often 'what in my life is generating it, and can any of it be removed.'
What lowers the field
Contracting muscle is one of the more powerful anti-inflammatory organs the body has — working muscle releases signals that, unlike fat-derived cytokines, are accompanied by resolution. Reducing visceral fat removes a source rather than treating a symptom. Fiber feeds the microbes that maintain the gut barrier and produce short-chain fatty acids. Sleep is when inflammatory control is re-established, and even modest restriction raises measurable markers. Alcohol, chronic psychological stress, and unrelieved training load push the other way. This is not a list of remedies; it is a list of inputs that determine the environment your immune system is operating in.
Where peptides fit
The compounds discussed alongside inflammation are best understood as modulators rather than suppressants — the aim is a better-ordered response, not a blunted one. Thymosin Alpha-1 is studied for its role in immune coordination and in the balance of regulatory cells that keep responses proportionate. KPV is associated with a calmer inflammatory environment in the gut, the same barrier discussed above. Selank is discussed for anxiety-related signaling alongside immune effects, which is relevant given how directly stress and inflammation interact. GHK-Cu is associated with remodeling and a less inflammatory tissue environment. BPC-157 is discussed in repair contexts where the inflammatory phase has not progressed as it should. NAD+ funds the repair enzymes whose demand rises when inflammatory damage accumulates. Where these compounds genuinely help is in supporting resolution; what they cannot do is outwork an environment that keeps generating the problem.
The heart of it
Inflammaging is weather, not an event — the ambient conditions every cell is asked to work in. It is lowered by removing sources rather than neutralizing symptoms, and the sources are usually findable: visceral fat, a softened gut barrier, a mouth that quietly infects, and sleep that never arrives. Peptides earn their place in that context, not in place of it.
In practice
Prioritize the fat that is not visible.
Visceral fat is an inflammatory organ, not a cosmetic concern. Its reduction improves the field more reliably than any targeted intervention.
Feed the barrier.
Fiber and varied plant intake are how the gut lining and its microbiome are maintained. Barrier integrity is a long-term construction project.
Have your mouth examined.
Periodontal disease is a common, quiet, and fully treatable source of systemic inflammatory load. It is often missed in a routine physical.
Match training to recovery.
Exercise is anti-inflammatory when it is followed by recovery. Unresolved training load is itself a source of chronic inflammatory signaling.
Treat sleep as the control knob.
Inflammatory regulation is re-established overnight. Repeated short sleep raises measurable markers within days, not years.
Selected research
- Franceschi C, et al. (2018). Inflammaging: a new immune-metabolic viewpoint for age-related diseases. Nature Reviews Endocrinology. PubMed
- Furman D, et al. (2019). Chronic inflammation in the etiology of disease across the life span. Nature Medicine. PubMed
- Franceschi C, Campisi J. (2014). Chronic inflammation (inflammaging) and its potential contribution to age-associated diseases. Journals of Gerontology: Series A. PubMed