CHRONIC INFLAMMATION AND AGING - Katiuscia Vella - ETHICA SOCIETAS-Rivista di scienze umane e sociali

The Role of Inflammaging in Human Health

Abstract: Inflammation is a fundamental biological process for the defense of the organism against infections and tissue damage. However, in recent decades, numerous studies have shown that with advancing age a form of low-grade chronic inflammation, known as inflammaging, may develop. This persistent inflammatory state is characterized by elevated levels of inflammatory mediators and represents one of the main biological mechanisms linking biological aging to the development of chronic diseases. Inflammaging is now considered one of the central processes in geroscience, the discipline that studies the biological mechanisms of aging. This article analyzes the main biological mechanisms underlying age-associated chronic inflammation, its biomarkers, and the role it plays in the development of age-related diseases.

Keywords: #inflammaging #chronic #inflammation #biological aging #geroscience #longevity medicine #KatiusciaVella #ethicasocietas #ethicasocietasjournal #scientificjournal #humansciences #socialsciences #ethicasocietasupli

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Introduction

Inflammation represents one of the fundamental mechanisms through which the organism protects itself from infections, trauma, or other harmful agents. Under physiological conditions, the inflammatory response is temporary and precisely regulated, allowing tissue repair and the restoration of biological balance.

In recent years, however, scientific research has shown that with advancing age a form of low-grade, persistent, and often silent chronic inflammation may develop, contributing to the progressive deterioration of the organism. This phenomenon has been defined as inflammaging, a term that combines the concepts of inflammation and aging.

What is Inflammaging

Inflammaging describes a state of chronic activation of the immune system characterized by moderately elevated but persistent levels of circulating inflammatory mediators.

Among the main biomarkers associated with this process are:

C-reactive protein (CRP)
interleukin-6 (IL-6)
tumor necrosis factor alpha (TNF-α)

Unlike acute inflammation, which represents a protective and temporary response, chronic inflammation can contribute over time to tissue damage and dysfunction of various organs.

Why Inflammation Increases with Age

Several biological factors contribute to the increase in chronic inflammation with aging. Among the main mechanisms involved are:

accumulation of senescent cells
alterations of the immune system
dysfunctions of the gut microbiota
increased oxidative stress
accumulation of cellular and molecular damage

Senescent cells play a particularly important role. They release numerous pro-inflammatory molecules through a process known as the senescence-associated secretory phenotype (SASP), contributing to the amplification of systemic inflammation.

Inflammaging and Chronic Diseases

Numerous epidemiological and experimental studies have shown that inflammaging is associated with the development of various age-related chronic diseases. Among the most relevant are:

cardiovascular diseases
type 2 diabetes
neurodegenerative diseases
osteoporosis
certain types of cancer

For this reason, chronic inflammation is now considered one of the main biological mechanisms linking biological aging to the development of chronic pathologies.

The Role of Lifestyle and Metabolism

Chronic inflammation does not depend exclusively on biological age. Numerous lifestyle-related factors influence the activation of inflammatory processes. Among the most relevant are:

unbalanced diet
physical inactivity
obesity
chronic stress
sleep disorders

Conversely, a healthy lifestyle can help modulate systemic inflammation. Regular physical activity, a balanced diet, and the maintenance of proper metabolic balance are associated with reduced levels of inflammation.

Inflammaging and Longevity Medicine

Within the framework of geroscience, chronic inflammation represents one of the main biological processes driving biological aging. For this reason, numerous studies are investigating how to modulate inflammatory processes to improve health during aging.

The goal of longevity medicine is not to completely eliminate inflammation, which is an essential biological response, but to restore a more efficient and less harmful immune balance over time.

Conclusions

Inflammaging represents one of the key concepts in the biology of aging. Understanding the mechanisms through which chronic inflammation affects the functioning of the organism may contribute to the development of new strategies to prevent or delay the onset of chronic diseases.

For this reason, the study of inflammaging is now considered one of the pillars of modern longevity medicine.

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