Inflammaging: The Word You Need to Know
Scientists use the term "inflammaging" to describe the chronic state of low-grade inflammation that accumulates with age and accelerates biological ageing across multiple organ systems. It is not the acute inflammation of an injury or infection. It is quieter. Slower. Persistent. And the gut microbiome is now understood to be one of its primary drivers.
A 2024 review published in Biomedicines describes inflammaging as linked to increased systemic cytokines, exacerbated by gut microbiota imbalance, contributing to the decline of organs and physiological functions. As the gut microbiome loses diversity with age, beneficial bacteria decline, pathogenic ones increase, and the resulting dysbiosis drives persistent low-grade inflammation that circulates systemically. The skin, as the body's largest and most metabolically active surface organ, is among the most visible places that inflammation lands.
Collagen does not simply break down with time. It breaks down with inflammation. The gut is one of the primary sources of that inflammation.
What Gut Dysbiosis Does to Your Collagen
Collagen is the structural protein that gives skin its firmness and elasticity. It is produced by fibroblasts in the dermis and continuously turned over throughout life. As we age, production declines and degradation accelerates. What accelerates degradation is inflammation.
A 2025 review from the University of South Florida's Centre for Microbiome Research, published in IJMS, found that microbial dysbiosis leads to the destruction of collagen and elastin through MMP activation. Matrix metalloproteinases (MMPs) are enzymes that break down structural proteins in the skin's extracellular matrix. They are activated by inflammatory signals. When the gut is dysbiotic, it releases lipopolysaccharides and other bacterial byproducts into the bloodstream. These compounds trigger cytokine cascades that activate MMPs. The MMPs then degrade collagen and elastin in the dermis. The result is accelerated wrinkling, loss of skin elasticity, and compromised barrier function.
A comprehensive review in Frontiers in Physiology, published in 2024, confirmed that gut dysbiosis accentuates inflammaging by promoting senescent cell accumulation and compromising the immune response. Senescent cells stop dividing but remain metabolically active, secreting inflammatory molecules that further degrade surrounding tissue. The gut microbiome, when disrupted, both generates the initial inflammatory signal and impairs the immune clearance mechanisms that would normally remove senescent cells.
The Leaky Gut, Leaky Skin Connection
When the gut microbiome is disrupted, the tight junctions between intestinal cells weaken. This increased gut permeability allows bacterial byproducts into the bloodstream. A 2025 review in ScienceDirect describes how this systemic endotoxaemia activates Toll-like receptors and triggers chronic low-grade inflammation, contributing to accelerated cellular ageing across organs including the skin.
The skin barrier follows a parallel trajectory. A 2025 review in Annals of Dermatology found that inflammaging linked to gut microbiota imbalance drives chronic inflammation that degrades collagen and elastin, while short-chain fatty acids produced by beneficial gut bacteria help neutralise reactive oxygen species that would otherwise contribute to collagen breakdown. A gut that consistently produces SCFAs is a gut that is actively protecting the structural integrity of your skin. A gut depleted of SCFA-producing bacteria is not.
Every skincare routine addresses the surface. Inflammaging driven by the gut operates below the surface, degrading the scaffold that skincare is trying to support.
The Ageing Gut Is Not Inevitable
The gut microbiome is not fixed. It responds to what it is fed. A landmark study transferring aged gut microbiota into young germ-free mice found that certain bacterial species within the aged microbiota directly promote inflammaging in a young host. The reverse is also documented: dietary interventions that restore microbiome diversity measurably reduce systemic inflammatory markers. The rate at which your gut ages, and by extension the rate at which your skin ages, is not simply written in your DNA.
The most consistent dietary lever is prebiotic fibre. Beneficial bacteria need fermentable fibre to produce short-chain fatty acids. Without consistent daily supply, they decline. The SCFA production that regulates inflammation, maintains gut barrier integrity, and protects against collagen-degrading MMP activation falls away with them.
DULCI provides 7g of clinically studied prebiotic fibre per scoop, an excellent source of fibre by the regulated standard. It dissolves in hot or cold liquid and feeds the bacteria that produce the short-chain fatty acids the gut and skin both depend on. It supports the gut environment that the research consistently identifies as a driver of how fast ageing progresses.
The collagen serum is addressing a symptom. The inflammation that degrades collagen faster than the body can replace it is a system problem. The gut is where that system starts.
Feed the bacteria. Slow the fire. Give the skin a fighting chance.
