Fatigue relief is possible

Chronic fatigue is one of the most common and disabling complaints in medicine, yet it remains one of the hardest to define. A new review published in Frontiers in Integrative Neuroscience argues that the surest way to understand this elusive symptom is not through its contested definitions but through what reliably relieves it. By synthesizing the most cited evidence on mitigating interventions, an Italian research team identified four classes of behavioral treatment that consistently ease chronic fatigue across strikingly different conditions, from stroke and cancer to multiple sclerosis and traumatic brain injury, and even in people without any clinical diagnosis.

The scale of the problem is considerable. Recent data indicate that chronic fatigue affects an average of 7.7 percent of the general population worldwide, with higher prevalence reported among women, people of lower socioeconomic status, and Asian compared with American and European populations. The ICD-11 defines fatigue as a feeling of exhaustion or decreased energy, usually experienced as a depletion of physical or mental resources and characterized by reduced capacity for work and efficiency in responding to stimuli. In its chronic form, fatigue can become a multisystem disorder lasting more than six months, not alleviated by rest, and often accompanied by post-exertional malaise, cognitive dysfunction, and sleep disturbances.

Because the terminology surrounding chronic fatigue is so heterogeneous, the team adopted an efficacy-informed perspective. They searched Scopus using the terms fatigue AND relief OR mitigation OR treatment, deliberately preferring the broader term fatigue over chronic fatigue to avoid relying on inconsistent labels. By coupling fatigue with intervention-related terms, the search inherently selected studies addressing persistent and functionally impairing forms of the symptom. A second search paired each identified intervention with fatigue, ranked results by citation count, and applied an arbitrary threshold of 50 citations to retain only the most established evidence. Studies addressing only exertion-related fatigue, such as that experienced by trained athletes, were excluded.

Four classes of intervention emerged with transversal effectiveness. Cognitive behavioral therapy, a form of psychotherapy that aims to identify and redirect negative thought patterns and behaviors, showed promising results across contexts. As cognitive behavioral models suggest, a combination of physiological, behavioral, cognitive, and social factors contributes to fatigue, and CBT targets the specific thinking patterns, such as catastrophic thoughts about the meaning of symptoms, the behaviors, such as excessive avoidance of activity or pushing oneself despite increasing fatigue, and the emotion regulation strategies that interact with the physiological processes underlying chronic fatigue symptoms.

The evidence for CBT is substantial. Randomized controlled trials found that CBT produced significantly greater decreases in chronic fatigue severity than various control conditions, in both adults and adolescents. A meta-analysis of 13 studies found a nearly medium mean effect size, with substantial heterogeneity across studies likely reflecting differences in symptom severity, treatment intensity, and outcome measures. In cancer care, CBT significantly reduced chronic fatigue both during and after treatment, and internet-based CBT produced a large effect size in severely fatigued breast cancer survivors compared with usual care. A systematic review of four studies in multiple sclerosis reported a moderately positive effect, while a quasi-experimental workplace study showed that a one-day CBT-based workshop reduced work-related rumination and chronic fatigue at follow-up.

Mindfulness-based approaches formed the second class. Mindfulness is defined as the state of being openly aware of and attentive to what is taking place in the present, and the two most used protocols, mindfulness-based stress reduction and mindfulness-based cognitive therapy, may operate through changes in repetitive negative thinking, cognitive and emotional reactivity, self-compassion, and psychological flexibility. These interventions have proven effective even in people who tried CBT with little result. In cancer patients, they mitigated chronic fatigue, distress, fear of recurrence, mood disturbance, and sleep problems, and a meta-analysis of 257 subjects suggested benefit in patients with stroke, traumatic brain injury, and multiple sclerosis.

Physical activity and yoga completed the quartet. Physical activity, defined as any bodily movement produced by skeletal muscle contraction, is recommended by WHO guidelines at two and a half hours per week at moderate intensity, and clinical guidelines endorse it for reducing fatigue in cancer. A recent meta-analysis of 170 studies found that physical activity of diverse types mitigated chronic fatigue regardless of cancer type, timing, modality, or setting, and a meta-analysis of 31 articles confirmed effectiveness in multiple sclerosis. Yoga, combining physical postures, breathing techniques, and meditation, showed small positive effects in a meta-analysis of 19 clinical studies with moderate confidence, a statistically significant benefit in breast cancer, and an advantage when added to aerobic exercise training. Notably, greater practice was associated with greater relief, and in a parallel comparison of aerobic and yoga training in mild to moderate multiple sclerosis, both groups improved with no significant difference between them.

The convergence of these findings carries a deeper message. Physical activity and yoga primarily engage bodily and postural systems, whereas CBT and mindfulness predominantly target cognitive and perceptual processes. Despite these differences, all four interventions promote active engagement with internal states and environmental demands. The authors propose that chronic fatigue reflects, rather than condition-specific processes, the alteration of shared regulatory mechanisms, likely involving neurophysiological dynamics and associated biological markers. Individuals describe chronic fatigue in remarkably similar terms across contexts, typically referring to reduced energy, diminished motivation, and impaired engagement in daily activities, reinforcing the idea of a common regulatory node in human physiology.

This perspective also suggests a pathway for hard cases. When behavioral strategies produce insufficient improvement, the authors outline two possible explanations. First, the neuronal plasticity underlying learning and adaptation may be constrained by neurobiological and biochemical alterations, limiting the capacity to re-adapt despite appropriate behavioral engagement. Second, altered body-brain communication may impair the integration of sensory information into adaptive decision-making, consistent with evidence from listening-related fatigue, where sustained cognitive effort to process degraded sensory input has been associated with measurable electrophysiological changes. In such cases, non-invasive brain stimulation may support the restoration of functional balance, as studies in multiple sclerosis showing chronic fatigue reduction following transcranial direct current stimulation suggest. Neuromodulation, in this view, does not replace behavioral training but may facilitate restoration of functional communication patterns when endogenous regulation is insufficient. Multisensory stochastic resonance, especially vibrotactile, has also been proposed as a promising novel approach with potential to reduce the sensory effort associated with fatigue.

The review closes with clear priorities for the field. Chronic fatigue requires consistent measurement, and instruments such as the modified Fatigue Impact Scale, for which normative thresholds have recently been introduced, may serve as a starting point for standardized monitoring, ideally integrated with stable and easily collectable physiological markers. The adoption of shared measures would promote more consistent definitions and terminology, reducing reliance on heterogeneous labels, and such advancements are expected to be reflected in future revisions of ICD classifications and diagnostic criteria. The availability of multiple effective interventions highlights the importance of personalized choice, identifying the most suitable strategy for each individual while taking into account personal characteristics, health status, and social and socioeconomic factors. The authors call for a shift from disease-centered approaches toward a mechanism-oriented framework, in which fatigue is considered a key regulatory signal of system imbalance, and for multidisciplinary consortia that integrate clinical, physiological, and neuro technological knowledge to accelerate the development of effective and scalable strategies for chronic fatigue mitigation.

Subject of Research: Behavioral interventions for chronic fatigue relief across clinical and non-clinical conditions

Article Title: Fatigue relief is possible

Article References: De Ventura, M., Mattioni, G., L’Abbate, T., Bertoli, M., Grifoni, J., Persichilli, G., Canelli, A., D’Onofrio, A., Paulon, L., & Tecchio, F. (2026). Fatigue relief is possible. Frontiers in Integrative Neuroscience, 20, Article 1822424. https://doi.org/10.3389/fnint.2026.1822424

Image Credits: AI Generated

DOI: 10.3389/fnint.2026.1822424

Keywords: chronic fatigue, cognitive behavioral therapy, mindfulness, yoga, physical activity, neuromodulation, multiple sclerosis, cancer, stroke, traumatic brain injury, biomarkers, personalized interventions