Why Being Fit Helps You Manage Chronic Diseases

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woman exercising checking fitness watch
You probably know that exercise is one of the top things you can do to prevent chronic problems, but it can also mitigate existing obesity, heart disease, and diabetes — and the symptoms that come along with them.Ivan Gener/Stocksy
Put all together, chronic diseases are the leading cause of death and disability in the United States. Six in 10 American adults have one chronic disease, and 4 in 10 have two or more.

Health experts regularly claim that exercise is one of the top things you can do to lower your risk of developing one of these chronic problems in the first place, but it’s also important to know that exercise can play a role in managing problems and symptoms you may already be experiencing, says Brad Prigge, a wellness exercise specialist who has worked with the Mayo Clinic Healthy Living Program.

“If you look at a range of things like high blood pressure, high cholesterol levels, persisting pain, and inflammation — all of these things that are risk factors and symptoms of various chronic conditions — across the board, there is a huge value that comes from increasing fitness and your level of physical activity in your life,” Prigge says.

For instance, aerobic exercise can help prevent heart disease, but if you do develop markers of heart problems — such as high cholesterol or high blood pressure — moderate intensity activity can help stop those problems from causing more serious ones (such as heart attack or stroke).

Strength training builds muscle and promotes healthy joints, preserving mobility and function in healthy individuals as they age. But this type of exercise also helps decrease arthritis pain and can improve glucose control in people with type 2 diabetes. Simple flexibility exercises can help improve a range of joint motions, reducing risk for potential falls for everyone.

And for people with arthritis, stretching eases joint pain and prevents it from getting worse.

What Makes Physical Activity Such a Wonder Drug

Exercise is seen as “pleiotropic,” simply meaning that it has “many effects,” says Shawn Flanagan, PhD, an assistant professor of sports medicine and nutrition at the University of Pittsburgh. Exercise can enhance sleep; protect and improve brain function; develop or maintain bone, muscle, heart and other connective tissues; and promote a healthy immune system, he says.

“Wounds heal faster, medication doses can sometimes be reduced or maintained, and disease severity can be improved considerably depending on the condition,” Dr. Flanagan adds. “The practical benefits are impressive.”

When it comes to the brain, Flanagan says, “Exercise promotes the release of a number of factors that protect neurons, improve recovery from injury, and likely enhance the integrity of the blood-brain barrier.” The blood-brain barrier is the group of blood vessels that control what gets transported from the blood into the brain, making sure toxins, pathogens, and inflammation stay out, and helpful cells and molecules get in.

All those things are important when it comes to staving off chronic disease, Flanagan explains. Neuron damage and inflammation in the brain, for example, are known to happen in people who have multiple sclerosis, Alzheimer’s disease, and Parkinson’s disease, for example.

There isn’t a condition out there that “fitness can’t help,” says Scott Parker, a personal trainer in private practice in Los Angeles. While there’s a lot of conversation about how to exercise to get a certain body type or look, people can overlook the fact that a huge function of exercise is to maintain and improve our overall health.

Here’s a closer look at how exercise can improve management and symptom relief for several chronic health conditions. And remember, if you have a chronic health condition or other chronic symptoms, check with your doctor before starting a new exercise routine to make sure it’s safe for you to do and won’t cause further damage.

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Exercise Helps Reverse Obesity and the Ill Effects That Come With It

There are a few reasons why increased activity can help combat obesity. Defined as a body mass index (BMI) of 30 or higher, obesity is a serious chronic condition that affects more than 4 in 10 of adults — 41.9 percent — in the United States.

Additionally, about 19.7 percent of children nationwide are obese.

Obesity contributes to an estimated 112,000 preventable deaths each year and is on the rise. In 1980, 13.4 percent of the nation’s adults were considered obese, considerably less than the current figure.

“I thinka major problem is that most people don’t see obesity as a chronic disease, but it is,” Parker says.

RELATED: Obesity Triggering Rising Cancer Rates in Millennials

And one of the first steps you can take to prevent some of the ill effects of obesity (such as high cholesterol and high blood pressure, which can heighten risk of hypertension and heart disease) is to move. It’s not about getting “thin” or “getting abs” but about being healthy, Parker says. Even a small increase in activity (such as walking a few miles a day or cycling) can take you a long way toward achieving a healthier weight.

If you are obese, exercise can lower your risk of developing heart disease, type 2 diabetes, some cancers, depression, anxiety, and other diseases.

For most people who are obese, losing weight is part of the care plan, and exercise will help you do that.
And according to an article published in 2021, for people who are obese, increased fitness and physical activity is linked to longer life even if you don’t gain weight.

Moving Helps Lessen Fibromyalgia Pain and Improves Function

If you are one of the four million adults in the United States with fibromyalgia, you may experience intense chronic pain all over your body, fatigue, headaches, problems sleeping, and depression.

For people who are dealing with this persistent, at times all-consuming pain, exercise could be a way to make you feel better. Aerobic exercises, strength training, stretching, and balance training, for instance, have all been shown to help reduce the pain and disability associated with the condition.

RELATED: Drug-Free Ways to Treat Fibromyalgia

A review published in 2017 found that an aerobic exercise intervention improved overall quality of life by lessening the intensity of pain, improving physical function, and lessening stiffness and fatigue.

And a study from 2017 found that practicing qigong, a traditional Chinese system of exercises and breathing, for 30 to 45 minutes each day for six to eight weeks not only helped people’s physical and mental health but also eased their chronic pain and helped them sleep better.

Exercise Helps People With Diabetes Manage Blood Sugar Levels

For the 37.3 million Americans who have diabetes, regular exercise is an important lifestyle intervention that can help manage the condition and stop further complications from it.

Regular exercise is shown to help with glucose control in those who have type 2 diabetes (physical activity improves insulin-sensitivity, or the ability of the hormone to do its job to lower your blood sugar levels) — and it can help lower your weight.

Better glucose control, improved insulin sensitivity, and carrying less weight all help prevent other problems that are closely linked to diabetes, such as hypertension, heart disease, and high blood pressure.
In 2010, the American Diabetes Association released a joint statement with the American College of Sports Medicine recommending that people with type 2 diabetes get regular physical activity to help manage the condition.

Exercise Can Help Heart Disease Symptoms and Stop It From Getting Worse

Physical activity can play a big role in fighting heart disease, the No. 1 killer of all Americans each year.

A 2018 report looked at physical activity and its impact on preventing and treating coronary artery disease (CAD). The researchers found that structured exercise training — incorporating a fitness or exercise routine in your daily life — can help reduce CAD symptoms, improve blood flow in the heart, and reduce mortality. The increased oxygen circulation that comes from exercises that improve blood flow prevents the kind of plaque buildup in the arteries that leads to CAD complications.

Prigge says exercise plays a big role in fighting heart disease. If the gym sounds like punishment, try going for a walk, riding a bike, or doing simple aerobic exercises in your living room, adds Parker. Any of these activities can help.

RELATED: Why Exercise Is Good for Your Heart

But remember not to increase the intensity too quickly if you’re starting a new exercise program and you have markers of heart disease. Always check with your doctor about a new routine. And if you have heart disease and start experiencing dizziness, unusual shortness of breath, irregular heartbeats, or chest pains, then it is time to take a break and let your doctor know about unusual symptoms. If you already have heart disease (even if it’s moderate), some exercises may exacerbate your symptoms and may not be safe.

Exercise Promotes Healthy Aging (Even if You Don’t Have a Chronic Disease)

One of the reasons why exercise is good for bodies with chronic conditions is that exercise is simply good for all bodies in general. Research shows physical fitness can actually help slow down the aging process.

A 2017 study found that high-intensity aerobic exercise can reverse some of the signs of aging at the cellular level.

Working out won’t turn back the clock, but high-intensity aerobic workouts did improve a person’s aerobic capacity (that is, lung function) and the mitochondrial function for skeletal muscles (declining mitochondrial function is associated with muscle wasting and muscle loss in the elderly).

It’s important for us all to stay active as we get older, Flanagan says. “The primary goal is to maintain activity.”

RELATED: What to Know About Midlife Exercise Needs

Check with your doctor to make sure the intensity and frequency of your workouts are appropriate, Flanagan adds. But do explore a variety of types of physical activity, such as resistance or strength training and high-intensity exercise. “Resistance exercise is the best way to maintain muscle mass and strength,” Flanagan says.

It’s natural to think about how the aging process might slow you down or limit what you can do, Prigge says. Exercise and remaining physically active is your best defense against that. “It helps you to continue to do things that you might have taken for granted before,” he says. “[Getting regular exercise] helps you experience more in your life.”

Additional reporting by Carmen Chai.

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