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As people age, physical changes become a normal part of life—muscles weaken, bones become less dense, and lung efficiency tends to decline. However, recent research indicates that obesity might amplify these effects, putting additional strain on lung health in older adults beyond what is typically seen with aging alone.
A study presented at the 2026 American Physiology Summit in Minneapolis revealed that seniors with obesity exhibit significantly poorer lung function compared to their non-obese counterparts. This discovery underscores an important health concern, especially since many older individuals experience shortness of breath without clear explanation.
Conducted by researchers from the Institute for Exercise and Environmental Medicine at Texas Health Presbyterian Hospital and UT Southwestern Medical Center, the study aimed to understand how body fat distribution impacts breathing in later years. With approximately 30 percent of U.S. adults aged 65 and above classified as obese—according to the Centers for Disease Control and Prevention—the findings are highly relevant. Obesity is already linked to increased risks of heart disease and diabetes, and now, reduced lung capacity is added to the list of concerns.
The research involved 59 participants with an average age near 70 years. Nearly half of them were classified as obese. The team analyzed body composition and lung performance, noting that those with obesity not only had higher overall body fat but also accumulated more visceral fat—fat stored around internal organs—particularly in the abdominal area. Visceral fat is known to be more harmful to health compared to other fat deposits.
Test results showed that individuals with obesity had a decreased lung capacity, meaning their lungs couldn’t hold as much air after deep inhalation. They also demonstrated a compromised ability to exhale air efficiently in terms of both volume and flow rate. These aspects are crucial because they reflect lung flexibility and overall breathing efficiency. Reduced lung function can lead to difficulties during physical activity, with symptoms like breathlessness and fatigue becoming more common.
The study suggests that excess body fat might physically restrict lung expansion, thereby impairing breathing. Interestingly, although women generally had a higher percentage of body fat and men stored more visceral fat, these differences did not significantly influence lung function outcomes. The negative impact of obesity on breathing appeared consistent across both sexes.
Sarah Skillett, the principal investigator, emphasized the importance for healthcare providers to consider obesity when addressing respiratory complaints among older adults. The findings imply that weight management could be a vital component of improving lung health in this population.
It’s worth noting, however, that the study had a relatively small sample size and was presented as an abstract rather than a peer-reviewed publication, indicating that further research is needed to validate these results in larger groups.
Despite these limitations, the study sheds light on the potential worsening effects of obesity on aging lungs. It highlights the significance of maintaining a healthy weight and staying physically active, even later in life.
In essence, while aging naturally influences lung function, excess body fat can accelerate this decline, making breathing more difficult and restricting physical capability. Although preliminary, these insights serve as a reminder of the importance of personalized health strategies to support respiratory well-being among seniors with obesity.
If weight loss is a goal, exploring studies on foods like oranges that may aid obesity management and berries that could help prevent cancer, diabetes, and obesity might be beneficial. For more health updates, look into recent research on ginger’s role in weight management and green tea’s potential in promoting weight loss.
Source: UT Southwestern Medical Center.
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