# Chronic Inflammation: What the Research Describes

> Acute inflammation is a vital protective mechanism. Chronic silent inflammation is being studied as a factor in various diseases. A factual overview.

The body responds to injury or infection with an inflammatory reaction that is essential for healing and defense. But what happens when this reaction never fully subsides and instead keeps working in the background? Such **chronic silent inflammation** can have far-reaching consequences for long-term health.

## Acute vs. chronic silent inflammation

**Acute inflammation** is characterized by visible signs such as redness, swelling, heat and pain, and typically subsides within weeks. **Chronic silent inflammation**, also known as "silent inflammation" or "inflammaging", by contrast often persists for years or decades without these obvious symptoms. It only becomes measurable through specific laboratory markers such as high-sensitivity CRP (hsCRP), IL-6, TNF-alpha and fibrinogen. The term "inflammaging" describes the link between this low-grade inflammation and age-related diseases.

## Factors that influence inflammatory markers

Various factors can raise inflammatory markers in the body. **Visceral fat** produces pro-inflammatory cytokines, while **dysbiosis** in the gut can promote pro-inflammatory metabolites. **Chronic psychosocial stress** and **sleep deprivation** affect immune regulation and lead to elevated inflammation levels. **Hyperglycemia** and **insulin resistance**, through the formation of advanced glycation end products (AGEs), as well as **smoking and alcohol consumption**, also have direct pro-inflammatory effects. **Oxidative stress** from environmental toxins or overtraining contributes as well.

## Natural inflammation modulation

**Omega-3 fatty acids** such as EPA and DHA are precursors of resolvins and protectins, which are actively involved in resolving inflammatory reactions. An optimized omega-3 to omega-6 ratio in the diet is a well-documented strategy for modulating inflammation. **Curcumin** from turmeric is being intensively studied for its anti-inflammatory properties, particularly with regard to the NF-κB signaling pathway. Its bioavailability can be improved through special formulations. **Sulforaphane** from broccoli activates the Nrf2 signaling pathway, which regulates the production of antioxidant enzymes and thus has an indirect anti-inflammatory effect.

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## Frequently asked questions

**What is the difference between acute and chronic inflammation?**
Acute inflammation is a short-term reaction to injury or infection with visible symptoms. Chronic inflammation is long-lasting, often symptom-free and can lead to tissue damage over time.

**What role does diet play in chronic inflammation?**
A fiber-rich diet and the consumption of polyphenols can lower inflammatory markers. A balanced ratio of omega-3 to omega-6 fatty acids is also crucial for resolving inflammation.

**How can I detect chronic inflammation?**
Chronic inflammation can be detected through specific laboratory markers in the blood such as high-sensitivity CRP (hsCRP), interleukin-6 (IL-6) and TNF-alpha, even when no obvious symptoms are present.

## Sources

Franceschi C & Campisi J (2014), J Gerontol - Chronic Inflammation (Inflammaging).
Calder PC (2020), Nutrients - Eicosapentaenoic and docosahexaenoic acid-derived specialised pro-resolving mediators.
Hewlings SJ & Kalman DS (2017), Foods - Curcumin: A review of its effects on human health.

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