Chronic Low-Grade Inflammation
A real, measurable process — and the most abused word in wellness
What it is
Chronic low-grade inflammation is a persistent, subclinical activation of the immune system — detectable in blood as modestly elevated inflammatory markers such as high-sensitivity CRP, without the redness, heat and swelling of acute inflammation. It is not an illness you catch. It is a process that sits downstream of other things, and upstream of several serious diseases.
Why it matters
This page has to do two opposite jobs at once. Chronic inflammation is real, it is measurable, and it is causal — not merely correlated — in atherosclerosis: trials of anti-inflammatory drugs have reduced cardiovascular events without touching cholesterol, which is about as clean a demonstration of causality as medicine gets. AND the word has been so thoroughly captured by marketing that it now sells turmeric lattes, elimination diets and supplement stacks to people who have never had a marker measured. Both of those sentences are true, and separating them is the entire point of this page.
What BioSignal knows about treating this
What works for Chronic Low-Grade Inflammation
BioSignal’s clinical summary, most important first.
- Lose excess visceral fat — the single most effective intervention, and the least marketed
- Stop smoking
- Exercise regularly — reliably lowers inflammatory markers
- Treat sleep apnoea and protect sleep
- Treat gum disease — a genuine, cheap, overlooked source of chronic inflammatory burden
- Statins lower CRP as well as ApoB (clinician-directed)
- Targeted anti-inflammatory drugs (colchicine, IL-1β inhibition) — proven in high-risk cardiovascular disease; NOT general wellness tools
Signal Records relevant to this condition
Interventions and contributing factors — some of these records describe a cause rather than a cure. The rating shown is BioSignal’s confidence in that Signal Record, not a claim about how well it treats this condition. Open any of them for the full evidence.
- Curcumin (Turmeric)Limited evidence
Thousands of studies, no approved drug — because curcumin is barely absorbed and a known false positive in lab assays. Modest osteoarthritis relief is its one credible claim.
- Omega-3 Fatty AcidsModerate confidence
Lowers triglycerides, and reduces preterm birth in pregnancy. Routine fish oil does NOT prevent cardiovascular disease, cancer or dementia in the general population. High-dose omega-3 increases atrial fibrillation risk — a real harm most bottles do not mention.
- Vitamin CHigh confidence
Does not prevent colds — one of the best-tested negatives in nutrition. Shortens them slightly, but only if you were already taking it. Megadoses are mostly excreted: absorption saturates around 200 mg/day. Genuinely useful for iron absorption, and genuinely essential — scurvy is still real.
- N-Acetylcysteine (NAC)Moderate confidence
A life-saving antidote that has been repackaged as a wellness supplement. The overdose evidence does not transfer to a healthy person taking a capsule.
- AlcoholHigh confidence
A Group 1 carcinogen with dose-dependent harms. The heart-protection belief does not survive the methods designed to test it. Cutting back helps, even without quitting.
- StatinsHigh confidence
Proven, proportional reduction in cardiovascular events and mortality by lowering LDL/ApoB; well-characterized, mostly manageable safety profile.
- Intermittent FastingModerate confidence
It works for weight loss — by helping you eat less, not by metabolic magic. Not superior to calorie restriction. Protect your muscle. Unsafe on insulin.
New to this? Read these first
How this usually unfolds
- Recognize risk factors
- Get diagnosed
- Track key biomarkers
- Lifestyle first
- Evidence-based treatment
- Long-term monitoring
Who is at risk
- Excess visceral fat — adipose tissue is metabolically active and secretes inflammatory signals
- Smoking
- Physical inactivity
- Poor sleep and untreated obstructive sleep apnoea
- Chronic periodontal (gum) disease — genuinely underrated
- Excess alcohol
- Chronic infection
- Ageing itself ('inflammaging')
How it's diagnosed
There is no single test that diagnoses 'chronic inflammation', and anyone selling you one is overreaching. High-sensitivity CRP is the practical marker, and it is used mainly to REFINE cardiovascular risk — not as a general wellness score. It is also highly non-specific: it rises with a cold, with obesity, with smoking, and with any recent infection, so a single elevated reading means very little on its own. If it is markedly high, the right response is to look for a cause, not to buy a supplement.
Key biomarkers
Lifestyle
Explore this condition across BioSignal
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Frequently asked questions
Is chronic inflammation real, or is it a wellness buzzword?
Both, and the two need separating carefully. It is real: it is measurable in blood, it rises with obesity, smoking, poor sleep and ageing, and it is CAUSALLY implicated in atherosclerosis — trials of anti-inflammatory drugs have reduced heart attacks without lowering cholesterol at all, which is strong evidence that the inflammation itself was doing damage. That is serious science. It is also true that the word has been captured by an industry that sells supplements and elimination diets to people who have never had a marker measured, on the premise that inflammation is a thing you 'have' and can 'flush out'. It is not. It is a process, downstream of causes.
Should I get my inflammation tested?
Not as a wellness screen, no. High-sensitivity CRP is a legitimate test with a legitimate use — refining cardiovascular risk in someone where that changes a decision. It is a poor general health score, because it is extremely non-specific: it rises if you have a cold, if you are carrying excess weight, if you smoke, if you had a recent infection. A single raised reading in a well person usually means very little, and the anxiety it produces is often the most reliable thing it generates. If your clinician has a reason to measure it, measure it. If a supplement company suggests it, be sceptical.
What is an anti-inflammatory diet?
There is no single validated definition, which should tell you something. What the evidence actually supports is unglamorous: a Mediterranean-style pattern is associated with lower inflammatory markers, and so is losing excess weight, exercising, sleeping properly and not smoking. No individual food is an anti-inflammatory treatment, no supplement has been shown to improve clinical outcomes by lowering inflammation, and 'anti-inflammatory' on a label carries no regulatory meaning whatsoever.
Do turmeric and fish oil reduce inflammation?
They can modestly lower inflammatory MARKERS, and that is not the same as improving your health — a distinction this whole field routinely blurs. Lowering a number is only worth doing if lowering the number changes an outcome, and for these supplements that has not been shown. Compare that with the drugs that genuinely target inflammation in cardiovascular disease, which were tested against heart attacks and strokes, not against a blood value. If you want to lower inflammation in a way that has been shown to matter, lose visceral fat, stop smoking, and move.
What actually lowers it?
The things nobody is selling. Losing excess visceral fat is the largest single lever — fat tissue is not inert storage, it is metabolically active and it secretes inflammatory signals. Then exercise, stopping smoking, treating sleep apnoea, and treating gum disease, which is a genuinely underrated and cheap source of chronic inflammatory burden. Statins lower CRP as well as ApoB. All of that is free or nearly free, which is precisely why it is not what appears in your feed.
Evidence summary
Chronic low-grade inflammation is an established biological process, measurable by high-sensitivity CRP and interleukin-6, and associated with obesity, smoking, physical inactivity, poor sleep, periodontal disease and ageing. Its causal role in atherosclerotic cardiovascular disease is supported by randomised trials of anti-inflammatory therapy: interleukin-1β inhibition reduced cardiovascular events without lowering lipids, and colchicine has reduced events in chronic coronary disease. hs-CRP is validated for cardiovascular risk refinement but is non-specific and is not recommended as a general wellness screen. Weight loss, exercise, smoking cessation and statin therapy all reduce inflammatory markers. Supplements including curcumin and omega-3 can modestly reduce inflammatory markers; no supplement has demonstrated improved clinical outcomes via inflammation reduction. There is no single validated definition of an 'anti-inflammatory diet'; Mediterranean-style dietary patterns are associated with lower markers.
References & sources
- CANTOS trial — interleukin-1β inhibition and cardiovascular events
- COLCOT and LoDoCo2 — colchicine in coronary disease
- AHA/ACC guidance on hs-CRP in cardiovascular risk assessment
Educational information — not medical advice
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