What’s the Difference Between Acute and Chronic Inflammation?

Inflammation is a hot topic in the health and wellness space. All over social media, supplement labels, recipe titles, and many more places, you’ll see things proclaimed as “anti-inflammatory,” with the implication that inflammation is a bad thing. But what is inflammation, why is it bad, and how do you prevent it? In truth, not all inflammation is bad (sometimes it’s even helpful!), but these examples are referring to a specific type of harmful inflammation, known as chronic inflammation. Read on to learn more about chronic inflammation symptoms, the causes of chronic inflammation, and how to reduce inflammation naturally. 

You can also listen to an audio version of this guide on The WellBe Podcast. 

So, What Is Inflammation?

At a high level, inflammation is the body’s natural response against harm. The term refers to a process during which your body’s white blood cells, and the substances they produce, protect you from bacteria, viruses, and other foreign invaders. Sounds like a good thing, right? Well, a lot of the time, it is totally good — and totally normal. 

Inflammation happens in everyone, all the time, whether you’re aware of it or not. It’s a vital part of your body’s immune system and ability to heal from injury, as well as a key way of signaling the immune system to kick into high gear. Without it, small issues like a knee scrape or a head cold could turn into something much more serious.

So if inflammation is basically saving your life all the time, why does it have such a bad rap? Why is everyone always trying to avoid it? The answer is that there are two distinct types of inflammation: acute inflammation, which is generally helpful, and chronic inflammation, which is generally harmful.

An injury is an example of acute inflammation
An injury is an example of acute inflammation

Chronic Inflammation vs. Acute Inflammation

When you compare acute inflammation to chronic inflammation, you’ll see a lot of similarities, but also some vital differences. They’re similar in how the inflammation process works and what the white blood cells do, but very different when it comes to why the processes occur and how they affect your overall health. 

What Is Acute Inflammation?

Acute inflammation is, in a way, the “good” kind of inflammation. It occurs almost immediately when you experience an injury or catch a virus, has only localized effects (so it only occurs precisely where the injury is, or where the virus is affecting your body), and usually only lasts a short time. So if you cut your finger, bang your knee, sprain your ankle, or come down with a sore throat, acute inflammation is the mechanism that helps your body heal itself, defending against viruses and bacteria and repairing damaged tissue. 

Signs of acute inflammation include: 

  • Redness
  • Swelling
  • Heat
  • Pain
  • Numbness

If you want help reducing chronic inflammation, schedule a 1:1 call with Adrienne to learn about her holistic patient advocacy services. She can work with you to implement an anti-inflammatory lifestyle.

Stress is a cause of chronic inflammation
Stress is a cause of chronic inflammation

To understand acute inflammation on a deeper level, here’s a research-backed breakdown of what’s happening in your body during an acute inflammation response: 

  • When your body experiences an injury or encounters a pathogen, your body sends out a type of protein called a cytokine.
  • This cytokine acts as an emergency signal to let your immune cells, hormones, and nutrients know that there’s a problem for them to fix. 
  • After getting the signal, white blood cells go find the injured or sick area and eat up germs, dead or damaged cells, and any other outside crud. Hormones make blood clots to help heal damaged tissue, and then remove them when the healing is over. 
  • After the wound is healed or the virus defeated, the immune cells and hormones return to business as usual, leaving no trace of their work.

The body is pretty amazing, right? So now onto the “bad” kind of inflammation.

What Is Chronic Inflammation?

Chronic inflammation occurs is similar in many ways to acute inflammation: cytokines sound the alarm, and the SWAT team of white blood cells and hormones get called in to attack. But instead of attacking an injury or virus, the immune system mistakenly targets normal, healthy cells. The white blood cells swarm the “injured” area, but they don’t have anything to do (since there’s no identifiable virus, bacteria, foreign invader, or injury) so they start attacking internal organs or other good tissues and cells.

It’s a long-term problem (hence the “chronic” part) that can be caused by a variety of factors, which we’ll go into more below. 

What Causes Chronic Inflammation?

Chronic inflammation can be caused by a whole bunch of different things, so the root issue can sometimes be difficult to pinpoint. But in general, it results from some outside element — a food, an irritant in the air, chemicals inhaled from a cigarette — that disturbs the delicate balance inside your body and sets off the alarm bells. 

Some common causes of chronic inflammation are:

  • Untreated causes of acute inflammation (like a bad cut that isn’t properly cleaned, disinfected, and protected)
  • Long-term, low-level exposure to an irritant, like an industrial chemical, a certain cleaning product, or air pollution
  • Smoking
  • Obesity
  • Alcohol
  • Chronic stress
  • An autoimmune disorder (like lupus, IBD, rheumatoid arthritis, etc) 
  • An unhealthy diet (i.e., lots of sugary, processed foods)

Of course, none of the above causes chronic inflammation in everyone. Some people can drink alcohol, eat junk, smoke, and so on and never get chronic inflammation (though they’d probably have some other issues going on…). 

And it’s also important to note that sometimes none of these factors will be present, and someone can still experience chronic inflammation. One of the frustrating truths about chronic inflammation is that there’s often no clear answer to the question of “what causes chronic inflammation.” The root cause could be dynamic, or it might be a combination of factors.

But because we know just how much what you put in your mouth affects your overall health, let’s double click on the diet part. 

The Link Between Diet and Inflammation 

Lots of chronic inflammation can be traced back to the food someone eats. But how? How does eating donuts every day lead to white blood cells misfiring? Let’s take it step by step. 

  • When you eat sugary food — like a donut — it gloms onto fat and protein cells already in your body.
  • This creates a chemical reaction that turns those cells into advanced glycation end products (AGEs, weird they left out the P in the acronym, we agree). 
  • This chemical reaction is damaging to the fat and protein cells the donut glommed onto, which causes your immune system to sound that emergency siren (hello, cytokines!) to try to break those damaged AGEs apart. 
  • Just like with acute inflammation, the white blood cells are looking for a problem — like an injury, bacteria, or virus — but find nothing. 
  • Still, the cytokines don’t know they’re sounding a false alarm, and your cells are obedient little warriors who listen to the siren, so your immune cells stick around and fight instead of retreating. This means that they eventually start attacking good cells, like your tissues and organs! That’s where chronic inflammation can cause some serious problems.
Anti-inflammatory foods can help prevent chronic inflammation.
Anti-inflammatory foods can help prevent chronic inflammation.

Chronic Inflammation Symptoms

When you experience acute inflammation, the symptoms are pretty obvious: redness, heat, and pain, all localized to the site of the injury or infection. But chronic inflammation symptoms are a bit more subtle — sometimes, there might not even be any symptoms, but doctors can confirm inflammation is occurring by testing for C-reactive protein (CRP), a marker for inflammation in the blood. And while symptomless chronic inflammation might seem pretty harmless, it can still lead to all the risks and complications of chronic inflammation with symptoms.

When chronic inflammation symptoms do present themselves, they can manifest in a variety of different ways, many of which can be mistakenly attributed to the common cold, or something else (hence chronic inflammation being so tough to nail down!). But here are some of the most common chronic inflammation signs and symptoms:

  • Fatigue, often coupled with chronic insomnia
  • Fever
  • Body aches and pains
  • Rashes or skin irritation
  • Cankers/mouth sores
  • Abdominal pain or digestive issues like constipation, diarrhea, or acid reflux
  • Chest pain
  • Depression or anxiety
  • Weight gain (and obesity is a contributing cause to chronic inflammation — talk about a vicious cycle!)

Someone with chronic inflammation might experience none, some, or all (yikes, hopefully not!!) of these symptoms, and they can range from barely noticeable to severe and last anywhere from around a month to several years.

Health Risks of Chronic Inflammation: Inflammatory Disease

While those chronic inflammation symptoms all sound pretty bad on their own, there’s worse news: long-term chronic inflammation has been linked to some very serious health issues down the line. While researchers are still trying to understand exactly how chronic inflammation contributes to disease, there’s conclusive evidence that chronic inflammation plays some role in the development of various inflammatory diseases. This is because if your body is fighting healthy cells, tissues, and organs over a long period of time, it can do some serious damage, which leads to damaged DNA, tissue death, and internal scarring.

If chronic inflammation is left untreated, all of this damage can result in a variety of different inflammatory diseases, including:

  • Neurodegenerative diseases, like Alzheimer’s 
  • Rheumatoid arthritis
  • Asthma
  • Certain types of cancer (according to the National Cancer Institute, this is because of the DNA damage caused by chronic inflammation) 
  • Type 2 diabetes
  • Cardiovascular disease and stroke (according to the American Heart Association, this could be because when inflammatory cells remain in blood vessels for too long, they promote the buildup of plaque, which the body perceives as a foreign substance and tries to wall off from the blood flowing in the arteries. If the plaque subsequently ruptures, it forms a blood clot that blocks blood flow to your heart or brain, which triggers a heart attack or stroke.)
  • Crohn’s disease
  • High blood pressure
  • High cholesterol
  • Parkinson’s disease

How to Reduce Inflammation Naturally

All of the above sounds pretty scary, right? Well, the good news is that usually, all it takes to reduce inflammation naturally are some lifestyle tweaks.

Avoid inflammatory foods

Certain foods can trigger an inflammation response, so avoiding them can make a big difference. Cut out or eliminate processed foods, fatty cuts of meat, and food products with trans fats (like things made with margarine or corn oil). This also means avoiding simple carbs (like white bread), refined sugar (which is used in most food products with added sugar), and high-fructose corn syrup, since these can all cause a blood sugar spike, which can in turn lead to chronic inflammation.

Eat anti-inflammatory food

On the flip side, certain foods can actually help control or prevent an inflammatory response. Organic fruits and vegetables, and anything with a lot of omega-3 fatty acids, like salmon, are great choices. Check out our guide to the 13 best anti-inflammatory foods for more.

Manage stress

Chronic stress puts the body in a constant state of fight-or-flight, which can lead to chronic inflammation. We know, life gets super busy, and sometimes you can’t change that, but try to keep your stress levels under control through yoga, meditation, biofeedback, regular exercise, acupuncture — whatever works for you!

Get enough sleep

Sleep is crucial to preventing inflammation, because sleep is when your body works to repair your white blood cells. If you skimp on sleep, your immune system doesn’t get the restoration it needs, so it kicks into higher gear to keep you healthy. This leads to — you guessed it — inflammation.

Focus on gut health 

Seventy percent of your immune system is located in your gut, so it’s pretty obvious that if you have poor gut health, your immune system isn’t working properly, and one result of that is chronic inflammation. To keep your gut in good working order, check out our comprehensive guide to gut health.

Reduce toxins in your life

Exposure to irritants or toxic chemicals sets off alarm bells in your body and can lead to inflammation. Cut these toxins out of your life by eating organic food whenever possible and choosing only non-toxic products to bring into your home or put on/in your body (for a database of fully vetted, WellBe-approved products across 20+ categories, check out our Non-Toxic Product Database).

Identify hidden allergies

If you have an allergy you’re not aware of, all your efforts at preventing inflammation could be thwarted. If you’re leading an anti-inflammatory life and still experiencing issues, you might have a sensitivity to something you’re eating or a product that you’re using. Get to the bottom of it by trying out an elimination diet, or asking your doctor for a blood test. Common allergens and sensitivities are gluten, soy, dairy, eggs, and yeast. You can also do a product or environment elimination diet by living or at least sleeping in a different place for a few nights, or using none of your normal personal care products and seeing if your allergy symptoms are reduced or even go away completely. When we interviewed Dr. Jonathan Aviv about acid reflux and heartburn, he told us that many common allergy symptoms, like a stuffy nose or post-nasal drip, are really just chronic inflammation from foods your body is trying to reject.

The WellBe Takeaway on Chronic Inflammation

This is a lot of info, so we’ll wrap it all up in a neat nutshell here for you. Here’s everything you need to know about inflammation, boiled down to a few easy-to-remember points:

  • There are two types of inflammation: acute vs chronic. Acute inflammation is good, and helps you heal from an injury or disease. Chronic inflammation is bad, and can lead to serious health issues down the line.
  • Chronic inflammation occurs when your body is under some sort of stress, which can come from a variety of sources, including nutritional, environmental, and lifestyle factors.
  • Chronic inflammation symptoms can vary, but include fatigue, insomnia, depression or anxiety, digestive issues, skin irritation or rashes, and body aches.
  • There are a number of long-term inflammatory diseases that can be triggered by chronic inflammation, including cancer, type 2 diabetes, rheumatoid arthritis, heart disease, and Alzheimer’s.
  • You can reduce inflammation naturally by managing your stress, sleeping enough, watching what you eat, and sussing out any unknown allergies. 

So there you go! Now the next time someone asks “What is inflammation?” you’ll have a clear answer to give them (this is what people talk about at parties, right??). 

Have you experienced chronic inflammation in your life? Were you able to get to the bottom of the issue? Let us know in the comments below!

Citations:

1. Hannoodee S, Nasuruddin DN. Acute Inflammatory Response. [Updated 2020 Nov 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan.

2. Pahwa R, Goyal A, Bansal P, et al. Chronic Inflammation. [Updated 2020 Nov 20]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan.

3. Davis KE, Prasad C, Vijayagopal P, Juma S, Imrhan V. Advanced Glycation End Products, Inflammation, and Chronic Metabolic Diseases: Links in a Chain? Crit Rev Food Sci Nutr. 2016;56(6):989-98. 

4. Vighi, G et al. “Allergy and the gastrointestinal system.” Clinical and experimental immunology vol. 153 Suppl 1,Suppl 1 (2008): 3-6. 

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