Burning match with flame and smoke representing chronic inflammation and health

Chronic Inflammation and Health: How It Affects the Body

author and Publish date

by macdragon | Aug 11, 2024

Chronic Inflammation and Health: How It Affects the Body

Publish date

by macdragon | Aug 11, 2024

Burning match with flame and smoke representing chronic inflammation and health

Understanding the connection between chronic inflammation and health can help us identify lifestyle factors that support a healthy inflammatory response. While there is no single food, supplement, medication, or treatment that can simply “turn off” inflammation, several evidence-informed strategies can support overall metabolic, immune, and cardiovascular health.

Research has linked persistent, low-grade inflammation with cardiovascular disease, type 2 diabetes, autoimmune disorders, neurodegenerative diseases, metabolic dysfunction, and certain cancers.

Understanding the difference between healthy, short-term inflammation and chronic inflammation can help us better understand how lifestyle, metabolic health, immune function, and other factors influence long-term health.

Understanding Acute and Chronic Inflammation

Inflammation is an important part of the body’s innate immune response.

When tissue is injured or the body encounters an infection or harmful stimulus, the immune system activates a coordinated inflammatory response. Blood flow to the affected area increases, blood vessels become more permeable, immune cells migrate into the tissue, and chemical signaling molecules help coordinate defense and repair.

Acute Inflammation

Acute inflammation develops rapidly and is generally short-lived. It is the response we commonly associate with an injury, infection, or wound.

The classic signs of acute inflammation include:

  • Redness
  • Heat
  • Swelling
  • Pain
  • Temporary loss or reduction of function

This type of inflammation serves an important purpose. Ideally, once the threat has been addressed and healing is underway, the inflammatory response resolves.

Chronic Inflammation

Chronic inflammation is different. Instead of resolving appropriately, inflammatory activity persists over a prolonged period—sometimes for months or years.

It may occur when the body cannot eliminate the original inflammatory trigger, when the immune system mistakenly reacts against the body’s own tissues, or when ongoing metabolic, environmental, infectious, or lifestyle-related factors continually stimulate inflammatory pathways.

Unlike the obvious swelling and redness of an acute injury, chronic low-grade inflammation can be much less noticeable.

Over time, however, persistent inflammatory signaling may affect cells, blood vessels, metabolic pathways, and tissues throughout the body.

This relationship between chronic inflammation and health has become an important area of research because inflammation appears to be involved in many seemingly different chronic diseases.

How Chronic Inflammation Affects Health

Chronic inflammation is not a single disease, nor does inflammation automatically mean that someone will develop a particular condition.

Rather, inflammation is one part of a complex biological process influenced by genetics, immune function, metabolic health, environmental exposures, lifestyle, infections, aging, and other factors.

The following conditions illustrate some of the ways persistent inflammation may influence health and disease.

Chronic Inflammation and Cardiovascular Disease

Inflammation plays an important role in the development and progression of cardiovascular disease, particularly atherosclerosis. The connection between chronic inflammation and health is particularly important when considering long-term cardiovascular risk.

Atherosclerosis is not simply an accumulation of cholesterol in the arteries. It is a complex process involving lipids, immune cells, inflammatory signaling, and changes within the arterial wall.

Chronic inflammation can contribute to endothelial dysfunction—the impaired function of the delicate inner lining of blood vessels—and can participate in the formation and progression of atherosclerotic plaque.

Inflammatory activity may also contribute to plaque instability, increasing the possibility that a vulnerable plaque may rupture and trigger an acute cardiovascular event such as a heart attack or stroke.

Certain inflammatory biomarkers may provide additional information about cardiovascular risk. High-sensitivity C-reactive protein (hs-CRP), for example, can be used in certain clinical situations as one component of cardiovascular risk assessment.

However, inflammatory markers should always be interpreted in context. An elevated CRP or ESR is nonspecific and does not, by itself, identify the underlying cause of inflammation.

Inflammation and Cancer

The relationship between inflammation and cancer is complex.

Chronic inflammatory environments can contribute to biological processes involved in cancer initiation, promotion, and progression. Persistent inflammatory signaling may increase oxidative stress and DNA damage while influencing cellular proliferation, blood vessel formation, immune regulation, and tissue repair.

Within the tumor microenvironment, immune and inflammatory cells may release cytokines, growth factors, and other signaling molecules that can influence tumor behavior.

Inflammatory pathways involving signaling molecules such as nuclear factor kappa B (NF-κB) may also influence genes involved in cell survival and proliferation.

Importantly, this does not mean that inflammation alone causes cancer. Cancer develops through a complex interaction of genetic, environmental, metabolic, immune, and lifestyle factors.

For people undergoing cancer treatment, supportive care should always complement—not replace—conventional oncology treatment.

💡Learn more about acupuncture and supportive care during cancer treatment.

Chronic Inflammation and Type 2 Diabetes

Low-grade chronic inflammation is closely associated with insulin resistance and type 2 diabetes.

Adipose tissue is metabolically active tissue that produces hormones and inflammatory signaling molecules. As adipose tissue becomes dysfunctional—particularly in the setting of visceral adiposity—it can contribute to increased inflammatory signaling.

Pro-inflammatory cytokines, including tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6), can interfere with normal insulin-signaling pathways.

Over time, insulin resistance means that cells become less responsive to insulin, making it more difficult for glucose to move efficiently from the bloodstream into cells.

Chronic metabolic stress and inflammation may also contribute to pancreatic beta-cell dysfunction, affecting the body’s ability to produce sufficient insulin.

Diet, physical activity, sleep, body composition, genetics, and other metabolic factors all influence this process.

💡Learn more about nutrition and metabolic health.

Inflammation and Autoimmune Disease

Inflammation is central to many autoimmune diseases.

Normally, the immune system distinguishes between the body’s own tissues and potential threats. In autoimmune disease, immune tolerance is disrupted, and the immune system mistakenly targets the body’s own cells or tissues.

In rheumatoid arthritis, for example, inflammatory cytokines contribute to persistent inflammation within the joints and may lead to progressive joint damage.

In systemic lupus erythematosus, autoantibodies and immune complexes can trigger inflammation affecting multiple tissues and organs.

Other autoimmune and immune-mediated conditions involve different inflammatory pathways.

Treatment varies considerably depending on the disease but often includes therapies designed to regulate or suppress specific aspects of the immune and inflammatory response.

Chronic Inflammation and Brain Health

The brain has its own highly regulated immune environment, and growing research has examined the role of neuroinflammation in neurodegenerative disease.

Microglia are specialized immune cells within the central nervous system. Under normal circumstances, they help protect and maintain the brain. However, persistent or dysregulated microglial activation may contribute to chronic neuroinflammation.

In Alzheimer’s disease, amyloid-beta and other disease-related changes can activate inflammatory responses within the brain. In Parkinson’s disease, neuroinflammatory processes have also been associated with the degeneration of dopamine-producing neurons.

Scientists continue to investigate whether inflammation is primarily a driver, consequence, or combination of both in different stages of neurodegenerative disease.

Brain health is influenced by many interconnected factors, including cardiovascular health, metabolic health, sleep, physical activity, nutrition, social connection, and cognitive stimulation.

💡Learn more about the vagus nerve, brain health, and the nervous system.

Inflammatory Bowel Disease

Inflammatory bowel disease (IBD), which includes Crohn’s disease and ulcerative colitis, involves chronic inflammation within the gastrointestinal tract.

IBD develops through a complex interaction among genetics, immune regulation, the intestinal microbiome, environmental factors, and the intestinal barrier.

Symptoms may include:

  • Abdominal pain
  • Persistent diarrhea
  • Rectal bleeding
  • Fatigue
  • Reduced appetite
  • Unintentional weight loss

Persistent inflammation can lead to complications such as strictures, fistulas, nutrient deficiencies, and an increased risk of colorectal cancer in some individuals.

IBD should not be confused with irritable bowel syndrome (IBS). Although the conditions can share some symptoms, IBD involves measurable intestinal inflammation and requires appropriate medical management.

[Internal link: Explore more information about digestive and gut health.]

Asthma and Chronic Airway Inflammation

Asthma is a chronic respiratory disease characterized by airway inflammation and variable airflow obstruction.

Symptoms may include wheezing, coughing, shortness of breath, and chest tightness.

Inflammation can make the airways more sensitive and reactive to triggers such as allergens, respiratory infections, exercise, environmental irritants, or changes in temperature.

Over time, poorly controlled inflammation may contribute to structural changes within the airways known as airway remodeling.

Anti-inflammatory medications, particularly inhaled corticosteroids, are an important component of asthma management for many patients.

Psoriasis and Systemic Inflammation

Psoriasis is an immune-mediated inflammatory disease that extends beyond the skin.

Immune pathways involving T cells and cytokines such as TNF-α, IL-17, and IL-23 contribute to accelerated skin-cell turnover and the characteristic plaques associated with psoriasis.

Importantly, psoriasis is increasingly recognized as a systemic inflammatory condition.

People with psoriasis—particularly more severe disease—may have an increased risk of psoriatic arthritis and certain cardiometabolic conditions.

Modern biologic medications can target specific inflammatory pathways and have significantly changed the treatment of moderate-to-severe psoriasis.

Obesity and Metabolic Inflammation

Obesity can be associated with a form of persistent, low-grade inflammation sometimes called metabolic inflammation or “metaflammation.”

Adipose tissue is not simply a passive energy-storage system. It functions as an active endocrine and immune organ.

When adipose tissue becomes enlarged or metabolically dysfunctional, immune cells can accumulate within the tissue and increase the production of inflammatory signaling molecules.

This inflammatory environment may contribute to insulin resistance and is associated with a range of metabolic conditions, including type 2 diabetes and cardiovascular disease.

Metabolic inflammation is also closely associated with metabolic dysfunction-associated steatotic liver disease (MASLD), formerly known as non-alcoholic fatty liver disease (NAFLD).

Importantly, health is more complex than body weight alone. Physical activity, sleep, nutrition, muscle mass, fat distribution, genetics, metabolic health, and many other factors influence inflammatory and cardiometabolic risk.

Multiple Sclerosis and Neuroinflammation

Multiple sclerosis (MS) is a chronic immune-mediated disease affecting the central nervous system.

In MS, immune activity damages myelin, the protective covering surrounding nerve fibers. This disrupts communication between the brain, spinal cord, and the rest of the body.

Inflammatory immune cells and signaling molecules are involved in the development of demyelinating lesions and neurological symptoms.

Disease-modifying therapies are designed to alter immune activity, reduce relapses, limit new disease activity, and slow progression in appropriate patients.

Inflammation, Anxiety, and Depression

Researchers are increasingly studying the relationship between inflammation and mental health.

Some individuals with depression and other mood disorders have elevated levels of inflammatory markers, including CRP and certain cytokines. Inflammatory signaling may influence neurotransmitter metabolism, neuroplasticity, stress-response pathways, and communication between the immune system and brain.

However, depression and anxiety are complex conditions with many potential biological, psychological, social, and environmental contributors.

Inflammation should therefore be viewed as one possible piece of a much larger picture—not as a single explanation for mood disorders.

Sleep, exercise, nutrition, social connection, stress management, psychotherapy, and appropriate medical care may all play important roles in supporting mental and emotional health.

How to Support a Healthy Inflammatory Response

Because chronic inflammation and health are influenced by many interconnected factors, there is no single food, supplement, medication, or treatment that can simply “turn off” inflammation.

Instead, several evidence-informed lifestyle strategies may help support healthy immune and inflammatory regulation.

Follow a Mediterranean-Style Eating Pattern

A Mediterranean-style dietary pattern is one of the most extensively studied approaches for supporting cardiovascular and metabolic health.

It emphasizes:

  • A wide variety of vegetables and fruits
  • Legumes
  • Whole grains, when appropriate and tolerated
  • Nuts and seeds
  • Extra-virgin olive oil
  • Fish and seafood
  • Herbs and spices
  • Minimally processed foods

Rather than focusing on a single “anti-inflammatory superfood,” consider the overall dietary pattern.

Highly processed foods, excessive added sugars, and diets low in fiber and nutrient-dense plant foods may negatively affect metabolic health when consumed regularly.

[Internal link: Read more about nutrition and healthy dietary patterns.]

Exercise Regularly

Regular physical activity has wide-ranging effects on cardiovascular, metabolic, musculoskeletal, immune, and brain health.

Both aerobic activity and resistance training can help improve insulin sensitivity, support healthy body composition, preserve muscle mass, and influence inflammatory regulation.

Consistency is generally more important than extreme exercise.

Choose forms of movement that are appropriate for your health, physical abilities, and medical conditions.

Prioritize Sleep

Sleep and immune function are closely interconnected.

Chronic sleep deprivation and disrupted circadian rhythms can affect inflammatory signaling, glucose regulation, appetite hormones, cardiovascular health, and cognitive function.

Most adults benefit from approximately seven to nine hours of sleep per night, although individual needs vary.

Maintaining consistent sleep and wake times, reducing excessive evening light exposure, addressing sleep disorders, and creating a supportive sleep environment can all contribute to better sleep quality.

Manage Chronic Stress

Short-term stress is a normal physiological response. Chronic, unresolved stress, however, can influence the nervous, endocrine, and immune systems.

Stress-management strategies may include:

  • Mindfulness or meditation
  • Breathing exercises
  • Yoga or tai chi
  • Time in nature
  • Regular physical activity
  • Social connection
  • Counseling or psychotherapy when appropriate

The goal is not to eliminate all stress, which is neither realistic nor necessary, but to improve the body’s ability to regulate and recover from it.

💡 Learn more about the vagus nerve and the stress response.

Consider Supplements Carefully

Certain nutrients and supplements have been studied for their potential effects on inflammatory pathways.

Omega-3 fatty acids, for example, have substantial research examining their effects on cardiovascular and inflammatory physiology. Curcumin has also been studied for its influence on several inflammatory pathways.

However, “natural” does not automatically mean safe or appropriate for everyone.

Supplements can interact with medications, affect bleeding risk, influence laboratory results, or be inappropriate for certain medical conditions. Quality, formulation, dose, and individual health status also matter.

Supplementation should therefore be individualized rather than used as a one-size-fits-all approach.

Avoid Smoking and Limit Alcohol

Smoking promotes oxidative stress, vascular injury, and inflammatory activity and is a major modifiable risk factor for cardiovascular disease, cancer, and respiratory disease.

Excessive alcohol intake can also contribute to systemic inflammation, liver disease, metabolic dysfunction, and other health problems.

Avoiding tobacco and limiting or avoiding alcohol are important components of long-term health.

Can Acupuncture Help Support Inflammatory Regulation?

Acupuncture is sometimes discussed as an “anti-inflammatory” therapy, but this description requires some nuance.

Research suggests that acupuncture may influence neuroimmune signaling, autonomic nervous system activity, and certain inflammatory pathways. However, its clinical effects depend on the condition being treated, and acupuncture should not be viewed as a replacement for appropriate medical diagnosis or treatment of inflammatory or autoimmune diseases.

In clinical practice, acupuncture may be used as part of an integrative approach to help manage certain symptoms associated with chronic health conditions, such as pain, stress, sleep disturbance, and treatment-related symptoms.

The goal is not simply to “reduce inflammation” as though inflammation were a single switch. Treatment should be individualized based on the person, their symptoms, underlying diagnosis, and overall health.

💡 Learn more about acupuncture and how it may support whole-person health.

The Bigger Picture: Chronic Inflammation and Health

Inflammation is not inherently harmful. It is an essential biological process that helps protect the body from infection, respond to injury, and initiate healing.

Problems can arise when inflammatory responses become persistent, excessive, or poorly regulated.

The relationship between chronic inflammation and health is complex. Genetics, metabolic health, immune function, nutrition, physical activity, sleep, stress, environmental exposures, infections, and underlying medical conditions can all influence inflammatory pathways.

Rather than searching for a single food, supplement, or treatment to “eliminate inflammation,” it is more helpful to focus on the foundations of long-term health: a nutrient-dense dietary pattern, regular physical activity, restorative sleep, stress regulation, avoiding tobacco, appropriate medical care, and addressing underlying health conditions.

If you are experiencing persistent symptoms or have concerns about inflammation, speak with a qualified healthcare professional. Inflammatory markers and symptoms need to be interpreted within the context of your complete medical history rather than in isolation.

At Raleigh Health & Wellness Center, we take an individualized approach to care, considering the many factors that may influence a person’s health and symptoms. Acupuncture and integrative supportive strategies may be incorporated alongside appropriate conventional medical care to help patients work toward their health goals.

References

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