Optimism’s Breath: Patient Expectations Significantly Impact Asthma Progression, Study Finds
A hopeful outlook following an asthma diagnosis may slow the disease’s progression, according to groundbreaking research from the Università Cattolica del Sacro Cuore, Milan campus. The study, published in the journal Health Expectations in July 2025, reveals a strong link between a patient’s expectations about their health and their long-term respiratory function.
Researchers have long understood the interplay between mental and physical health, but this study provides compelling evidence of the power of belief in managing chronic respiratory illness. The findings underscore the importance of addressing a patient’s psychological state alongside traditional medical interventions.
The Power of “Illness Expectations”
The research team, led by Professor Francesco Pagnini of the Department of Psychology, focused on what they term “illness expectations” (IEs) – future-oriented beliefs about the course of a disease and its symptoms. These expectations, conscious and unconscious, can profoundly influence patient outcomes and even clinical markers of disease progression.
“This study was developed in response to the difficulties reported by patients in managing asthma,” explained Professor Pagnini. “Patients helped identify key areas of concern, and their perspectives influenced the choice of outcomes and tools.” Despite limitations imposed by the pandemic on direct patient involvement in recruitment and dissemination, the study’s design remained firmly rooted in patient priorities, paving the way for potential co-designed interventions in the future.
Six-Month Longitudinal Study Reveals Key Insights
The study followed 310 individuals diagnosed with asthma over a six-month period, with assessments conducted at three points. Researchers measured asthma control using the Asthma Control Test (ACT) and assessed respiratory function through forced expiratory volume in 1 second (FEV1) using spirometry. Participants also completed the validated Illness Expectation Test (IET) to gauge their explicit and implicit expectations about their condition.
The results were striking. Individuals harboring more negative expectations about their asthma reported worsening symptoms over time. Furthermore, negative expectations regarding symptom progression correlated with a measurable decline in lung function.
“We empirically assessed the impact of IEs on asthma symptoms and respiratory function in patients,” Professor Pagnini affirmed. “It emerged that people with more negative explicit IE about their asthma reported worse symptoms over time.”
Implications for Treatment and Beyond
These findings suggest that addressing a patient’s mindset could be a crucial component of asthma management. The researchers observed similar results in studies involving patients with other chronic conditions, such as multiple sclerosis, strengthening the hypothesis that beliefs can significantly influence health outcomes.
The underlying mechanism, researchers suggest, may be akin to the placebo effect. “If I have an idea about the world and the future that awaits me, that idea will prevail, largely influencing behavior and thus, for example, modifying adherence to therapies and clinical recommendations,” Professor Pagnini concluded.
This research highlights the potential for interventions designed to cultivate more optimistic illness expectations, potentially improving patient adherence to treatment plans and ultimately enhancing their quality of life.
Further information about the study, “Illness Expectations and Asthma Symptoms: A 6‐Month Longitudinal Study,” is available via DOI: 10.1111/hex.70285.
