Here is one more reason to try to exercise – it helps fight chronic inflammation

NEW YORK – The next time you are feeling the burn during a workout, it might give you a boost to know that exercise can also be a balm. Research suggests it is one of the best tools to fight chronic inflammation.

Inflammation has emerged as a looming health concern in recent years. Experts say it can be both a cause and a sign of disease. And although there is still a lot people do not know about its significance, most experts agree that the less chronically inflamed people are, the healthier they are.

The scientific evidence is also clear that people who are sedentary tend to have higher levels of inflammation compared with those who exercise regularly. And when sedentary people start moving consistently, their inflammation levels generally decline.

Some researchers believe that exercise’s power to fight inflammation may be at the heart of why physical activity is so effective at protecting people against cardiovascular disease, diabetes, dementia and other conditions.

The growing understanding that exercise and inflammation are linked is relatively recent. And this has spurred a boom of research into the connection, said Dr Robert Shmerling, a rheumatologist and medical editor at Harvard Health Publishing.

Here is what you should know.

What is chronic inflammation?

Although inflammation may seem like a menace, it serves a vital function in keeping you healthy.

For example, after a paper cut or an ankle sprain, immune cells flood the area, which causes the surrounding tissue to swell and turn red. This kind of acute inflammation usually resolves in a few days. A similar process happens when you get an infection, such as a cold or the flu.

But chronic inflammation is a low-grade condition that can simmer for years. It can begin with an infection or injury, but then morph into a lingering state, in which the immune system starts attacking healthy tissue, said Dr Shmerling.

Chronic inflammation can also be linked to diet, stress, smoking, obesity, sleep quality and your level of physical activity. And it increases as you age.

Experts suspect this prolonged immune response may put you at greater risk for disease, and in some cases, make you feel fatigued, depressed or foggy. A doctor can usually detect chronic inflammation through blood tests that measure specific chemicals, or biomarkers, released by the immune system.

Why is exercise anti-inflammatory?

Experts are still untangling how physical activity fights chronic inflammation, said exercise physiologist Barbara Nicklas, a professor of gerontology at Wake Forest University School of Medicine.

Research suggests that consistent, moderate exercise can fight inflammation by tamping down on the release of inflammatory chemicals and ramping up the release of chemicals that fight it, she added.

Exercise can also lower inflammation indirectly, such as by improving sleep quality and lowering stress.

For people who are sedentary, exercise is especially effective at counteracting inflammation, experts said.

Certain kinds of fat cells have been shown to release chemicals into the blood that cause low-grade inflammation. When someone who has been sedentary starts working out consistently, not only does his or her fat tissue often shrink, but studies also suggest that the physical activity might alter the fat cells so fewer inflammatory substances are produced, Dr Shmerling said.

Regardless, there is no downside to someone taking up exercise, he added. “They may get healthier in a hurry, and it might have nothing to do with inflammation. The outcome is still a positive one.”

How can you maximise exercise’s anti-inflammatory potential?

Although research has not yet shown what kind and how much exercise is most effective for fighting inflammation, experts shared four tips for making the most of exercise’s potential impact on it.

1. Work out regularly

Most moderate-intensity exercise seems to reduce inflammation in the short term, and the more consistently you work out, the more you keep chronic inflammation at bay, said Professor Suzi Hong, from the University of California San Diego’s School of Public Health.

In a 2017 study, Dr Hong and her team found that a single, moderate, 20-minute treadmill workout, such as a brisk walk or jog, sparked a temporary anti-inflammatory response. If you are breathing harder than usual to keep up the pace, and you feel like you are putting in moderate effort, she said, you are probably fighting inflammation. For lasting benefits, though, it has to be a habit.

2. Prioritise strength training

Strength training is crucial as a person ages, including for its potential to fight inflammation.

For starters, resistance training reduces inflammation-causing fat cells, particularly when combined with regular aerobic exercise.

People with chronic inflammation tend to lose muscle mass more rapidly as they age than those with less inflammation, Dr Nicklas said, so strength training may be especially important for them to remain mobile and independent. The Centers for Disease Control and Prevention recommend that adults make time for at least two strength-training sessions a week.

3. Find workouts that help you de-stress

Chronic stress is another contributor to inflammation, so finding a workout you enjoy may offer greater anti-inflammatory benefits by helping to relieve stress. If you are looking for a place to start, a large body of research suggests that yoga can help calm the nervous system, lower inflammatory markers and lessen symptoms of diseases associated with chronic inflammation.

4. Build in time for recovery

High-intensity exercise produces a temporary surge in inflammation, so it is important to heal properly between workouts, Dr Hong said.

For similar reasons, avoid overtraining, since repeated intense workouts without appropriate recovery can heighten levels of inflammation and weaken the immune system, she added.

As with many other aspects of health, moderation and consistency are keys to getting and staying fit – and to fighting inflammation for the long haul. NYTIMES