How To Increase Lung Capacity at 70? A Pulmonologist Weighs In

Every breath you take is a vital exchange that powers your entire body, yet it is an action most people take for granted until it becomes a struggle. Your lungs are the engines of your vitality, supplying the oxygen necessary for everything from a brisk walk to a deep sleep. However, as the years pass, the natural elasticity of lung tissue can decline, making the simple act of breathing feel less efficient. The good news is that your respiratory system is remarkably adaptable. By understanding how lung volume works and committing to simple, intentional exercises, you can reclaim your stamina and ensure your lungs remain a strong foundation for your health at any age.

By age 70, the respiratory system has undergone decades of natural physiological shifts that fundamentally change how the body processes oxygen. Even in the healthiest individuals, the aging process causes the diaphragm to weaken and the ribcage to become more rigid as bones thin and cartilage calcifies. This increased stiffness means the chest cannot expand as fully as it once did. Simultaneously, the tiny air sacs in the lungs, known as alveoli, lose their shape and elasticity. This reduces the total surface area available for oxygen to enter the bloodstream and carbon dioxide to leave it, making breathing feel less effortless than in younger years.

For those who have managed asthma throughout their lives or have a history of smoking, these natural age-related declines are often more pronounced. Chronic inflammation from asthma can lead to structural remodeling of the airways, creating permanent narrowing that compounds the natural loss of lung elasticity. Similarly, smoking introduces toxins that accelerate the destruction of alveolar walls and damage the cilia—the tiny hairs responsible for clearing mucus. By age 70, a former smoker or a lifelong asthmatic may find that their "lung age" exceeds their chronological age, as the cumulative damage reduces the reserve capacity the body relies on during physical exertion.

It is important to understand that aging itself does create decreased lung function, even in the absence of disease or environmental damage. This "normal" decline typically begins in the mid-20s and progresses slowly over time. However, the respiratory system is built with significant reserve capacity, meaning most healthy adults do not notice these changes until later in life. While the biological clock cannot be stopped, the rate of decline is not fixed. By engaging in targeted respiratory exercises and maintaining cardiovascular activity, 70-year-olds can optimize their remaining lung volume and maintain a high level of physical independence.

Boosting Your Lung Capacity

Lung capacity, or volume, is the amount of air the lungs hold during a respiratory cycle. Specifically, it measures how many liters of air fill the lungs after a forced inhalation and exhalation.

While lung capacity naturally decreases with age, it is possible to improve respiratory function even at age 70. Much like building muscle through exercise, the respiratory system can be strengthened through targeted training. Whether you are approaching your senior years or are already there, these techniques can help fortify your breathing.

When you're caring for older people, about one out of every three patients over 65 will come in saying, 'I'm short of breath.' — Edward Manning, MD, Ph.D., assistant professor of medicine in the Section of Pulmonary, Critical Care, and Sleep Medicine at Yale.

Diaphragmatic Breathing

This deliberate exercise engages the diaphragm to increase lung capacity—a benefit often missed during unconscious, shallow breathing. By controlling the breath and involving the diaphragm, you can promote relaxation and increase blood oxygen levels.

How to perform diaphragmatic breathing:

• Position: Lie on your back with your knees bent.

• Placement: Place one hand on your chest and the other on your belly.

• Inhalation: Inhale through the nose so the stomach inflates, causing your hand to rise.

• Exhalation: Exhale through pursed lips, feeling the stomach return to its original position.

This exercise is particularly beneficial for those managing chronic obstructive pulmonary disease (COPD) to help reduce symptoms. It is also an effective way to improve overall lung volume.

Pursed-Lip Breathing

Pursed-lip breathing is another effective technique to improve lung capacity, particularly for individuals with asthma, COPD, or pulmonary fibrosis. This method helps the lungs release "stale" air, keeps the airways open longer, and promotes general relaxation.

How to perform pursed-lip breathing:

• Prepare: Find a comfortable seated or lying position and relax your shoulders and neck.

• Inhale: Keep your mouth closed and inhale through your nose for two seconds.

• Exhale: Purse your lips—as if you were about to whistle or blow out a candle—and breathe out slowly.

• The 2:1 Ratio: The key to this technique is exhaling for twice as long as you inhale. If you breathe in for two seconds, aim for a four-second exhalation. Using a timer or counting mentally can help maintain this rhythm.

Physical Activity

Aerobic exercise is a primary driver for increasing lung capacity and improving overall well-being. During activities like jogging or walking, the heart and lungs work in tandem to supply the body with the increased oxygen it requires.

As the heart pumps more blood to support active muscles, breathing becomes faster and deeper to facilitate higher oxygen absorption. This process naturally engages the diaphragm, the dome-shaped muscle located below the heart and lungs that serves as the primary engine for respiration.

Because the diaphragm is a muscle, it responds to training. Engaging in cardiovascular activities strengthens the heart-lung-diaphragm connection, ultimately leading to improved lung volume and more efficient breathing.

Maintain a Healthy Weight

Almost 30% of Americans 65 and older are obese due to inactive lifestyles. Obesity is linked with poor lung function and several other chronic conditions. Doctors recommend exercise as challenges with aging slip into a sedentary way of living.

One study found that central obesity — the type wherein fats accumulate in the abdominal area — was associated with a lower volume of exhaled air. People with weight problems often experience shortness of breath because the excess fat accumulation around the chest and abdomen restricts the lungs' ability to expand during respiration. The outcome is a changing respiration pattern leading to shallow breaths. 

Modifying your lifestyle is the most effective way to maintain a healthy weight. Exercising and eating a proper diet can shed unwanted pounds and increase lung capacity. 

Visit Your Doctor for a Lung Checkup

While some may overlook the importance of respiratory health, many serious conditions can develop without immediate symptoms. Regular checkups are essential for early detection, particularly for those at higher risk.

Federal guidelines recommend annual lung cancer screenings for individuals between ages 50 and 80 who have a significant history of smoking. Identifying anomalies in their early stages is critical to improving outcomes, avoiding complications, and reducing the need for more invasive, expensive treatments. If you experience persistent shortness of breath or chronic coughing, consult a primary care physician or a pulmonologist for a comprehensive evaluation.

A lung function test, or spirometry, is the most common way to measure how well your lungs are working. During the test, you sit upright and breathe into a mouthpiece attached to a small machine called a spirometer. A technician will ask you to take a deep breath in and then exhale as hard and fast as possible until your lungs are empty. This measures two key things: how much air you can hold (volume) and how quickly you can blow it out (flow). These numbers help doctors identify conditions like COPD or asthma and determine your "lung age" compared to others in your demographic.

The "thing they put on your finger" they often do when you go for a check-up is called a pulse oximeter. It measures your oxygen saturation, which is the percentage of oxygen-carrying hemoglobin in your blood. While it doesn't measure lung capacity directly, it is a vital indicator of lung efficiency. Your lungs’ primary job is to transfer oxygen from the air into your bloodstream; if your lungs are damaged or restricted, they can’t "load" enough oxygen onto your red blood cells, causing your blood oxygen levels to drop.

A pulse oximeter works using light, not needles. The device sends two different wavelengths of light—red and infrared—through your finger. Oxygenated blood and deoxygenated blood absorb these lights differently:

• Oxygen-rich blood absorbs more infrared light.

• Oxygen-poor blood absorbs more red light.

By calculating the ratio of light absorption, the device can instantly determine your oxygen level. For most healthy adults, a normal reading sits between 95% and 100%. If your lungs are struggling due to age, illness, or environmental factors, that number may dip, signaling that your respiratory system isn't meeting your body's demands.

A lung X-ray (or chest X-ray) is usually ordered when you have symptoms like a persistent cough, chest pain, or shortness of breath. While the lung function test (spirometry) measures how well you breathe, the X-ray allows doctors to see how your lungs look.

Here is what a chest X-ray can tell a doctor:

Identifying Infections and Disease

An X-ray is the primary tool for spotting pneumonia, which appears as white, cloudy patches (infiltrates) where the lungs should be clear. It also helps diagnose tuberculosis or signs of bronchitis.

Spotting Structural Issues and Masses

Doctors use X-rays to look for:

• Lung Cancer or Tumors: It can show nodules or masses that need further investigation.

• Emphysema: In older adults or smokers, an X-ray can show "hyper-inflated" lungs, which happens when air gets trapped and the lungs appear larger and darker than normal.

• Collapsed Lung (Pneumothorax): It reveals if air has leaked into the space between your lung and chest wall.

Detecting Fluid Buildup

X-rays are excellent at showing pleural effusion (fluid around the lungs) or pulmonary edema (fluid inside the lungs). These are often critical signs of heart issues, like congestive heart failure, where the heart isn't pumping efficiently enough to keep the lungs clear.

Checking "The Neighborhood"

Because it's a wide shot of your chest, an X-ray also tells the doctor about:

• The Heart: If the heart looks enlarged, it may be struggling.

• The Bones: It can show broken ribs or thinning bones in the ribcage, which we discussed can affect your breathing.

• The Diaphragm: It can show if the diaphragm is sitting too high or appears flattened, which affects your lung capacity.

Eat Lung-Boosting Foods

While exercise and breathing techniques strengthen the respiratory muscles, what you put on your plate provides the biochemical fuel your lungs need to repair and protect themselves. A diet rich in specific nutrients can help combat oxidative stress and reduce the inflammation that often narrows airways as we age. By incorporating a variety of "lung-boosting" foods, you can support the delicate tissues of the respiratory system from the inside out.

Some foods are loaded with vitamins and nutrients that support full lung function. Examples are:

Beets and beet greens: These are rich in nitrates, which the body converts into nitric oxide to help relax blood vessels, optimize oxygen uptake, and reduce blood pressure.

• Beets and beet greens: These are rich in nitrates, which the body converts into nitric oxide to help relax blood vessels, optimize oxygen uptake, and reduce blood pressure.

• Apples and peppers: These are high in vitamin C, a powerful antioxidant that supports lung function and has been shown to be especially beneficial for those with a history of smoking.

• Pumpkin: The bright orange flesh is packed with carotenoids like beta carotene, which offer potent anti-inflammatory and antioxidant properties that help protect lung tissue in older adults.

• Blueberries: These berries are full of anthocyanins—antioxidant pigments that shield the lungs from oxidative damage caused by pollutants and aging.

• Turmeric: This spice contains curcumin, a bioactive compound known for its significant anti-inflammatory effects, which can help improve overall pulmonary function.

• Tomatoes: These are one of the richest sources of lycopene, a carotenoid that has been linked to a slower decline in lung function and reduced airway inflammation.

If you have a lung condition, visit your doctor and work with a dietician to find the best foods for your health. 

Strengthen Your Lungs at Any Age

While aging causes natural changes to lung function, these shifts do not have to result in a loss of vitality. Over time, the diaphragm can weaken, and the bones of the ribcage may thin, potentially causing the chest cavity to lose some of its expansion capacity. Additionally, lung tissue can lose its elasticity, making it harder for the airways to stay open during exhalation.

👉 Pulmonologists agree that while lung capacity itself cannot be restored with age, older adults can significantly improve how efficiently their lungs function through exercise, breathing training, and lifestyle changes.

However, proactive lifestyle modifications can significantly minimize this impact and even improve respiratory volume. Beyond specific breathing exercises, maintaining a consistent fitness routine and a nutrient-dense diet are crucial. Aerobic activity keeps the respiratory muscles toned, while a diet rich in antioxidants and omega-3 fatty acids can help reduce inflammation in pulmonary tissues. By prioritizing these habits, you not only strengthen your lungs but also lower the incidence of chronic illnesses, ensuring a higher quality of life as you age.

Lung Function, Aging, and the Importance of Quality Long-Term Care

Much like other organs, the human lungs undergo numerous changes throughout a lifetime. From infancy to early adulthood, the lungs expand in size and reach peak functional capacity. However, as individuals enter their older years, several physiological shifts can affect respiratory health, making the topic especially pertinent for older adults considering their future care needs.

Typically, lung capacity increases from birth to about age 20 or 25 and then it peaks and stabilizes for the next 5 to 10 years. Around age 35, it starts to decline.” As a result, age is one of the strongest predictors of lung function. The decline is gradual, but measurable, with a loss of about 1% of total lung capacity every year after the age of 35. — Dr. Michael Mohning, a fellowship-trained pulmonologist at National Jewish Health in Denver.

The intersection of aging and reduced lung function underscores the importance of quality long-term care services. While individuals and their loved ones should make every effort to strengthen respiratory health, the aging process continues. As efficiency decreases, daily activities that were once routine can become strenuous. Simple tasks—such as walking, climbing stairs or light household chores—can leave an older adult breathless, fatigued or in discomfort.

In these scenarios, long-term care becomes invaluable. This support ensures a better quality of life through various avenues:

• In-home care: Assists with daily activities and ensures a safe, breathable environment.

• Specialized facilities: Provide environments equipped to handle specific respiratory ailments.

• Therapeutic support: Helps older adults engage in routines that maintain or improve lung function, even when existing health issues are present.

You can search for caregivers and long-term care facilities that can help a loved one with lung issues and other gaing needs by using the LTC News Caregiver Directory. This free database will help you find quality extended care services for someone you love.

Furthermore, the financial ramifications of managing decreased lung function can be considerable. Costs for treatments, medications, therapies and specialized care can escalate quickly. Long-Term Care Insurance serves as a protective measure, providing access to necessary services while mitigating the stress of significant out-of-pocket expenses.

Being proactive with your health, including improving lung capacity, is vital after age 50. However, a comprehensive proactive plan must also address the long-term consequences of aging on both family dynamics and personal finances.

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Here are the FAQs tailored to your content:

Frequently Asked Questions about Lung Health and Aging

Can you increase your lung capacity after age 70?

Yes. While lung function naturally declines with age due to loss of elasticity and muscle strength, the respiratory system remains adaptable. Through targeted training such as diaphragmatic breathing, pursed-lip breathing, and consistent aerobic exercise, individuals can strengthen the diaphragm and improve their overall lung volume at any age.

What are the best breathing exercises for seniors?

The two most effective exercises for improving lung capacity are:

• Diaphragmatic Breathing: Focuses on engaging the diaphragm rather than shallow chest breathing to increase oxygen intake.

• Pursed-Lip Breathing: Helps keep the airways open longer and is especially beneficial for those with COPD or asthma by releasing "stale" air from the lungs.

How does obesity affect lung function in older adults?

Excess fat accumulation around the chest and abdomen, known as central obesity, physically restricts the lungs' ability to expand fully. This often leads to a pattern of shallow breathing and shortness of breath. Maintaining a healthy weight through diet and exercise is crucial for allowing the lungs to reach their full expansion potential.

What is the difference between a spirometry test and a pulse oximeter?

A spirometry test (lung function test) measures the actual volume of air you can hold and how fast you can exhale it. A pulse oximeter is the small device placed on your finger that measures your oxygen saturation—the percentage of oxygen in your blood. While the pulse oximeter indicates how well your lungs are transferring oxygen into the bloodstream, spirometry measures the physical performance of the lungs.

Why is long-term care important for those with respiratory issues?

As lung efficiency decreases with age, daily tasks like climbing stairs or household chores can become strenuous. Long-term care provides essential support through in-home assistance or specialized facilities to ensure a safe environment. Additionally, Long-Term Care Insurance helps manage the significant financial costs associated with the specialized treatments and therapies required for chronic respiratory conditions.

What foods help improve lung health?

Certain nutrient-dense foods can help reduce inflammation and oxidative stress in the lungs. Key examples include:

• Beets and leafy greens for improved oxygen uptake.

• Apples and peppers for antioxidant support (Vitamin C).

• Blueberries and tomatoes for shielding lung tissue from damage and inflammation.